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123010121310 = 2355107180287
BaseRepresentation
bin111001010001111111…
…0010111111001011110
3102202111210020121122220
41302203332113321132
54003411042340220
6132302101450210
711613206531166
oct1624376277136
9382453217586
10123010121310
114819400888a
121ba0ba10966
13b7a4a0373b
145d4d0255a6
1532ee398540
hex1ca3f97e5e

123010121310 has 32 divisors (see below), whose sum is σ = 295233748992. Its totient is φ = 32801648160.

The previous prime is 123010121261. The next prime is 123010121317. The reversal of 123010121310 is 13121010321.

It is a happy number.

It is a super-2 number, since 2×1230101213102 (a number of 23 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 123010121310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123010121317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491987 + ... + 1572273.

It is an arithmetic number, because the mean of its divisors is an integer number (9226054656).

Almost surely, 2123010121310 is an apocalyptic number.

123010121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123010121310 is an abundant number, since it is smaller than the sum of its proper divisors (172223627682).

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

123010121310 is a wasteful number, since it uses less digits than its factorization.

123010121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131368.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123010121310 its reverse (13121010321), we get a palindrome (136131131631).

The spelling of 123010121310 in words is "one hundred twenty-three billion, ten million, one hundred twenty-one thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 51071 80287 102142 153213 160574 240861 255355 306426 401435 481722 510710 766065 802870 1204305 1532130 2408610 4100337377 8200674754 12301012131 20501686885 24602024262 41003373770 61505060655 123010121310