31011022123 has 16 divisors (see below), whose sum is σ = 32377203936. Its totient is φ = 29680358400.

The previous prime is 31011022117. The next prime is 31011022127. The reversal of 31011022123 is 32122011013.

It is a cyclic number.

It is not a de Polignac number, because 31011022123 - 2⁹ = 31011021611 is a prime.

It is a super-2 number, since 2×31011022123² (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 = 31011022097 and 31011022106.

It is not an unprimeable number, because it can be changed into a prime (31011022127) 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, 384465 + ... + 458077.

It is an arithmetic number, because the mean of its divisors is an integer number (2023575246).

Almost surely, 2^31011022123 is an apocalyptic number.

31011022123 is a deficient number, since it is larger than the sum of its proper divisors (1366181813).

31011022123 is a wasteful number, since it uses less digits than its factorization.

31011022123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73854.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31011022123 its reverse (32122011013), we get a palindrome (63133033136).

It can be divided in two parts, 310110 and 22123, that added together give a palindrome (332233).

The spelling of 31011022123 in words is "thirty-one billion, eleven million, twenty-two thousand, one hundred twenty-three".