31324112123 has 4 divisors (see below), whose sum is σ = 31324565280. Its totient is φ = 31323658968.

The previous prime is 31324112119. The next prime is 31324112143. The reversal of 31324112123 is 32121142313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31324112123 - 2² = 31324112119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31324112143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98915 + ... + 269132.

It is an arithmetic number, because the mean of its divisors is an integer number (7831141320).

Almost surely, 2^31324112123 is an apocalyptic number.

31324112123 is a deficient number, since it is larger than the sum of its proper divisors (453157).

31324112123 is an equidigital number, since it uses as much as digits as its factorization.

31324112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453156.

The product of its digits is 864, while the sum is 23.

Adding to 31324112123 its reverse (32121142313), we get a palindrome (63445254436).

The spelling of 31324112123 in words is "thirty-one billion, three hundred twenty-four million, one hundred twelve thousand, one hundred twenty-three".