31552531223 has 2 divisors, whose sum is σ = 31552531224. Its totient is φ = 31552531222.

The previous prime is 31552531207. The next prime is 31552531229. The reversal of 31552531223 is 32213525513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31552531223 - 2⁴ = 31552531207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31552531223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31552531229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776265611 + 15776265612.

It is an arithmetic number, because the mean of its divisors is an integer number (15776265612).

Almost surely, 2^31552531223 is an apocalyptic number.

31552531223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31552531223 is an equidigital number, since it uses as much as digits as its factorization.

31552531223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 32.

The spelling of 31552531223 in words is "thirty-one billion, five hundred fifty-two million, five hundred thirty-one thousand, two hundred twenty-three".