31013232223 has 16 divisors (see below), whose sum is σ = 32987460096. Its totient is φ = 29093977440.

The previous prime is 31013232203. The next prime is 31013232241. The reversal of 31013232223 is 32223231013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31013232223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31013232194 and 31013232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013232203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454990 + ... + 518692.

It is an arithmetic number, because the mean of its divisors is an integer number (2061716256).

Almost surely, 2^31013232223 is an apocalyptic number.

31013232223 is a deficient number, since it is larger than the sum of its proper divisors (1974227873).

31013232223 is a wasteful number, since it uses less digits than its factorization.

31013232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64134.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31013232223 its reverse (32223231013), we get a palindrome (63236463236).

The spelling of 31013232223 in words is "thirty-one billion, thirteen million, two hundred thirty-two thousand, two hundred twenty-three".