31431032047 has 2 divisors, whose sum is σ = 31431032048. Its totient is φ = 31431032046.

The previous prime is 31431032011. The next prime is 31431032089. The reversal of 31431032047 is 74023013413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31431032047 - 2²⁷ = 31296814319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31431032147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715516023 + 15715516024.

It is an arithmetic number, because the mean of its divisors is an integer number (15715516024).

Almost surely, 2^31431032047 is an apocalyptic number.

31431032047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31431032047 is an equidigital number, since it uses as much as digits as its factorization.

31431032047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 31431032047 in words is "thirty-one billion, four hundred thirty-one million, thirty-two thousand, forty-seven".