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31013410231 = 1929229245789
BaseRepresentation
bin11100111000100010…
…110001010110110111
32222001101012110212101
4130320202301112313
51002003413111411
622125233002531
72145353431426
oct347042612667
988041173771
1031013410231
1112175297151
1260163b3447
132c0331911b
141702c872bd
15c17aa88c1
hex7388b15b7

31013410231 has 16 divisors (see below), whose sum is σ = 33919020000. Its totient is φ = 28243990656.

The previous prime is 31013410229. The next prime is 31013410237. The reversal of 31013410231 is 13201431013.

It is not a de Polignac number, because 31013410231 - 21 = 31013410229 is a prime.

It is a super-2 number, since 2×310134102312 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31013410199 and 31013410208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013410237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3285 + ... + 249073.

It is an arithmetic number, because the mean of its divisors is an integer number (2119938750).

Almost surely, 231013410231 is an apocalyptic number.

31013410231 is a deficient number, since it is larger than the sum of its proper divisors (2905609769).

31013410231 is a wasteful number, since it uses less digits than its factorization.

31013410231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246066.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31013410231 its reverse (13201431013), we get a palindrome (44214841244).

The spelling of 31013410231 in words is "thirty-one billion, thirteen million, four hundred ten thousand, two hundred thirty-one".

Divisors: 1 19 29 229 551 4351 6641 126179 245789 4669991 7127881 56285681 135429739 1069427939 1632284749 31013410231