31925563133 has 2 divisors, whose sum is σ = 31925563134. Its totient is φ = 31925563132.

The previous prime is 31925563129. The next prime is 31925563139. The reversal of 31925563133 is 33136552913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23685825604 + 8239737529 = 153902^2 + 90773^2 .

It is a cyclic number.

It is not a de Polignac number, because 31925563133 - 2² = 31925563129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31925563139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15962781566 + 15962781567.

It is an arithmetic number, because the mean of its divisors is an integer number (15962781567).

Almost surely, 2^31925563133 is an apocalyptic number.

It is an amenable number.

31925563133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31925563133 is an equidigital number, since it uses as much as digits as its factorization.

31925563133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 41.

The spelling of 31925563133 in words is "thirty-one billion, nine hundred twenty-five million, five hundred sixty-three thousand, one hundred thirty-three".