31002402113111 has 16 divisors (see below), whose sum is σ = 38005985203200. Its totient is φ = 24884871258720.

The previous prime is 31002402113107. The next prime is 31002402113159. The reversal of 31002402113111 is 11131120420013.

It is not a de Polignac number, because 31002402113111 - 2² = 31002402113107 is a prime.

It is a super-2 number, since 2×31002402113111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002402113611) 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, 4713040511 + ... + 4713047088.

It is an arithmetic number, because the mean of its divisors is an integer number (2375374075200).

Almost surely, 2^{31002402113111} is an apocalyptic number.

31002402113111 is a deficient number, since it is larger than the sum of its proper divisors (7003583090089).

31002402113111 is a wasteful number, since it uses less digits than its factorization.

31002402113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426087646.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31002402113111 its reverse (11131120420013), we get a palindrome (42133522533124).

The spelling of 31002402113111 in words is "thirty-one trillion, two billion, four hundred two million, one hundred thirteen thousand, one hundred eleven".