31232131323229 has 2 divisors, whose sum is σ = 31232131323230. Its totient is φ = 31232131323228.

The previous prime is 31232131323199. The next prime is 31232131323233. The reversal of 31232131323229 is 92232313123213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19841438823129 + 11390692500100 = 4454373^2 + 3375010^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232131323229 - 2³⁹ = 30682375509341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232131321229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616065661614 + 15616065661615.

It is an arithmetic number, because the mean of its divisors is an integer number (15616065661615).

Almost surely, 2^{31232131323229} is an apocalyptic number.

It is an amenable number.

31232131323229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232131323229 is an equidigital number, since it uses as much as digits as its factorization.

31232131323229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 37.

The spelling of 31232131323229 in words is "thirty-one trillion, two hundred thirty-two billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-nine".