31232431039 has 2 divisors, whose sum is σ = 31232431040. Its totient is φ = 31232431038.

The previous prime is 31232430979. The next prime is 31232431057. The reversal of 31232431039 is 93013423213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31232431039 - 2¹¹ = 31232428991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31232431039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232431079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616215519 + 15616215520.

It is an arithmetic number, because the mean of its divisors is an integer number (15616215520).

Almost surely, 2^31232431039 is an apocalyptic number.

31232431039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232431039 is an equidigital number, since it uses as much as digits as its factorization.

31232431039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 31232431039 in words is "thirty-one billion, two hundred thirty-two million, four hundred thirty-one thousand, thirty-nine".