31552442297 has 2 divisors, whose sum is σ = 31552442298. Its totient is φ = 31552442296.

The previous prime is 31552442249. The next prime is 31552442329. The reversal of 31552442297 is 79224425513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18580143481 + 12972298816 = 136309^2 + 113896^2 .

It is an emirp because it is prime and its reverse (79224425513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31552442297 - 2¹⁰ = 31552441273 is a prime.

It is a super-2 number, since 2×31552442297² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31552442497) 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 as a sum of consecutive naturals, namely, 15776221148 + 15776221149.

It is an arithmetic number, because the mean of its divisors is an integer number (15776221149).

Almost surely, 2^31552442297 is an apocalyptic number.

It is an amenable number.

31552442297 is a deficient number, since it is larger than the sum of its proper divisors (1).

31552442297 is an equidigital number, since it uses as much as digits as its factorization.

31552442297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The spelling of 31552442297 in words is "thirty-one billion, five hundred fifty-two million, four hundred forty-two thousand, two hundred ninety-seven".