31100023313 has 16 divisors (see below), whose sum is σ = 32423976000. Its totient is φ = 29793594432.

The previous prime is 31100023249. The next prime is 31100023319. The reversal of 31100023313 is 31332000113.

It is a cyclic number.

It is not a de Polignac number, because 31100023313 - 2⁶ = 31100023249 is a prime.

It is a super-2 number, since 2×31100023313² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31100023291 and 31100023300.

It is not an unprimeable number, because it can be changed into a prime (31100023319) 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, 2417783 + ... + 2430611.

It is an arithmetic number, because the mean of its divisors is an integer number (2026498500).

Almost surely, 2^31100023313 is an apocalyptic number.

It is an amenable number.

31100023313 is a deficient number, since it is larger than the sum of its proper divisors (1323952687).

31100023313 is a wasteful number, since it uses less digits than its factorization.

31100023313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13504.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31100023313 its reverse (31332000113), we get a palindrome (62432023426).

The spelling of 31100023313 in words is "thirty-one billion, one hundred million, twenty-three thousand, three hundred thirteen".