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10121311230 = 2352314668567
BaseRepresentation
bin10010110110100011…
…01111001111111110
3222010101000212211220
421123101233033332
5131212023424410
64352154454210
7505546504002
oct113321571776
928111025756
1010121311230
114324241a28
121b65734366
13c53b83174
146c0300702
153e3872070
hex25b46f3fe

10121311230 has 32 divisors (see below), whose sum is σ = 25347285504. Its totient is φ = 2581667616.

The previous prime is 10121311223. The next prime is 10121311279. The reversal of 10121311230 is 3211312101.

It is a happy number.

It is a super-2 number, since 2×101213112302 (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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7333594 + ... + 7334973.

It is an arithmetic number, because the mean of its divisors is an integer number (792102672).

Almost surely, 210121311230 is an apocalyptic number.

10121311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10121311230 is an abundant number, since it is smaller than the sum of its proper divisors (15225974274).

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

10121311230 is a wasteful number, since it uses less digits than its factorization.

10121311230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14668600.

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

Adding to 10121311230 its reverse (3211312101), we get a palindrome (13332623331).

The spelling of 10121311230 in words is "ten billion, one hundred twenty-one million, three hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 14668567 29337134 44005701 73342835 88011402 146685670 220028505 337377041 440057010 674754082 1012131123 1686885205 2024262246 3373770410 5060655615 10121311230