31102423113 has 16 divisors (see below), whose sum is σ = 41601605760. Its totient is φ = 20669195136.

The previous prime is 31102423111. The next prime is 31102423127. The reversal of 31102423113 is 31132420113.

It is not a de Polignac number, because 31102423113 - 2¹ = 31102423111 is a prime.

It is a super-2 number, since 2×31102423113² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31102423113.

It is not an unprimeable number, because it can be changed into a prime (31102423111) 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, 1296756 + ... + 1320522.

It is an arithmetic number, because the mean of its divisors is an integer number (2600100360).

Almost surely, 2^31102423113 is an apocalyptic number.

It is an amenable number.

31102423113 is a deficient number, since it is larger than the sum of its proper divisors (10499182647).

31102423113 is a wasteful number, since it uses less digits than its factorization.

31102423113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25136.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31102423113 its reverse (31132420113), we get a palindrome (62234843226).

The spelling of 31102423113 in words is "thirty-one billion, one hundred two million, four hundred twenty-three thousand, one hundred thirteen".