31323311111123 has 16 divisors (see below), whose sum is σ = 33221373696000. Its totient is φ = 29431422413952.

The previous prime is 31323311111107. The next prime is 31323311111137. The reversal of 31323311111123 is 32111111332313.

It is a cyclic number.

It is not a de Polignac number, because 31323311111123 - 2⁴ = 31323311111107 is a prime.

It is a super-2 number, since 2×31323311111123² (a number of 28 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 = 31323311111092 and 31323311111101.

It is not an unprimeable number, because it can be changed into a prime (31323311111143) 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, 203216798 + ... + 203370876.

It is an arithmetic number, because the mean of its divisors is an integer number (2076335856000).

Almost surely, 2^{31323311111123} is an apocalyptic number.

31323311111123 is a deficient number, since it is larger than the sum of its proper divisors (1898062584877).

31323311111123 is a wasteful number, since it uses less digits than its factorization.

31323311111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174034.

The product of its digits is 972, while the sum is 26.

Adding to 31323311111123 its reverse (32111111332313), we get a palindrome (63434422443436).

The spelling of 31323311111123 in words is "thirty-one trillion, three hundred twenty-three billion, three hundred eleven million, one hundred eleven thousand, one hundred twenty-three".