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12131030310 = 2357291991959
BaseRepresentation
bin10110100110001000…
…01101010100100110
31011022102200012010220
423103010031110212
5144321020432220
65323430025210
7606422025210
oct132304152446
934272605126
1012131030310
115165717693
1224267a8206
1311b4351259
148311a95b0
154b0004540
hex2d310d526

12131030310 has 64 divisors (see below), whose sum is σ = 34421068800. Its totient is φ = 2677191552.

The previous prime is 12131030243. The next prime is 12131030333. The reversal of 12131030310 is 1303013121.

It is a super-2 number, since 2×121310303102 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12131030310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 989890 + ... + 1002069.

It is an arithmetic number, because the mean of its divisors is an integer number (537829200).

Almost surely, 212131030310 is an apocalyptic number.

12131030310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131030310 is an abundant number, since it is smaller than the sum of its proper divisors (22290038490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131030310 is a wasteful number, since it uses less digits than its factorization.

12131030310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992005.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 12131030310 its reverse (1303013121), we get a palindrome (13434043431).

The spelling of 12131030310 in words is "twelve billion, one hundred thirty-one million, thirty thousand, three hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 29 30 35 42 58 70 87 105 145 174 203 210 290 406 435 609 870 1015 1218 2030 3045 6090 1991959 3983918 5975877 9959795 11951754 13943713 19919590 27887426 29879385 41831139 57766811 59758770 69718565 83662278 115533622 139437130 173300433 209155695 288834055 346600866 404367677 418311390 577668110 808735354 866502165 1213103031 1733004330 2021838385 2426206062 4043676770 6065515155 12131030310