31030112123 has 16 divisors (see below), whose sum is σ = 32690165760. Its totient is φ = 29415283200.

The previous prime is 31030112093. The next prime is 31030112131. The reversal of 31030112123 is 32121103013.

It is a cyclic number.

It is not a de Polignac number, because 31030112123 - 2⁸ = 31030111867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030312123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140998 + ... + 1167876.

It is an arithmetic number, because the mean of its divisors is an integer number (2043135360).

Almost surely, 2^31030112123 is an apocalyptic number.

31030112123 is a deficient number, since it is larger than the sum of its proper divisors (1660053637).

31030112123 is a wasteful number, since it uses less digits than its factorization.

31030112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27718.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31030112123 its reverse (32121103013), we get a palindrome (63151215136).

The spelling of 31030112123 in words is "thirty-one billion, thirty million, one hundred twelve thousand, one hundred twenty-three".