31252005047 has 2 divisors, whose sum is σ = 31252005048. Its totient is φ = 31252005046.

The previous prime is 31252004977. The next prime is 31252005137. The reversal of 31252005047 is 74050025213.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74050025213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31252005047 - 2³⁴ = 14072135863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31252007047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15626002523 + 15626002524.

It is an arithmetic number, because the mean of its divisors is an integer number (15626002524).

Almost surely, 2^31252005047 is an apocalyptic number.

31252005047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31252005047 is an equidigital number, since it uses as much as digits as its factorization.

31252005047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 31252005047 in words is "thirty-one billion, two hundred fifty-two million, five thousand, forty-seven".