31100320323111 has 16 divisors (see below), whose sum is σ = 45008499113984. Its totient is φ = 18987960557664.

The previous prime is 31100320323053. The next prime is 31100320323143. The reversal of 31100320323111 is 11132302300113.

It is a happy number.

It is not a de Polignac number, because 31100320323111 - 2⁶ = 31100320323047 is a prime.

It is a super-2 number, since 2×31100320323111² (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 (31100320323511) 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, 3139538791 + ... + 3139548696.

It is an arithmetic number, because the mean of its divisors is an integer number (2813031194624).

Almost surely, 2^{31100320323111} is an apocalyptic number.

31100320323111 is a deficient number, since it is larger than the sum of its proper divisors (13908178790873).

31100320323111 is a wasteful number, since it uses less digits than its factorization.

31100320323111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6279087630.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31100320323111 its reverse (11132302300113), we get a palindrome (42232622623224).

The spelling of 31100320323111 in words is "thirty-one trillion, one hundred billion, three hundred twenty million, three hundred twenty-three thousand, one hundred eleven".