31552423223 has 2 divisors, whose sum is σ = 31552423224. Its totient is φ = 31552423222.

The previous prime is 31552423219. The next prime is 31552423229. The reversal of 31552423223 is 32232425513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31552423223 - 2² = 31552423219 is a prime.

It is a super-2 number, since 2×31552423223² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31552423223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31552423229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776211611 + 15776211612.

It is an arithmetic number, because the mean of its divisors is an integer number (15776211612).

Almost surely, 2^31552423223 is an apocalyptic number.

31552423223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31552423223 is an equidigital number, since it uses as much as digits as its factorization.

31552423223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 32.

Adding to 31552423223 its reverse (32232425513), we get a palindrome (63784848736).

The spelling of 31552423223 in words is "thirty-one billion, five hundred fifty-two million, four hundred twenty-three thousand, two hundred twenty-three".