31542144407 has 2 divisors, whose sum is σ = 31542144408. Its totient is φ = 31542144406.

The previous prime is 31542144343. The next prime is 31542144419. The reversal of 31542144407 is 70444124513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31542144407 - 2⁶ = 31542144343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31542144427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771072203 + 15771072204.

It is an arithmetic number, because the mean of its divisors is an integer number (15771072204).

Almost surely, 2^31542144407 is an apocalyptic number.

31542144407 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542144407 is an equidigital number, since it uses as much as digits as its factorization.

31542144407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 31542144407 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-four thousand, four hundred seven".