31545025051 has 2 divisors, whose sum is σ = 31545025052. Its totient is φ = 31545025050.

The previous prime is 31545024997. The next prime is 31545025073. The reversal of 31545025051 is 15052054513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31545025051 is a prime.

It is not a weakly prime, because it can be changed into another prime (31545020051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15772512525 + 15772512526.

It is an arithmetic number, because the mean of its divisors is an integer number (15772512526).

Almost surely, 2^31545025051 is an apocalyptic number.

31545025051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31545025051 is an equidigital number, since it uses as much as digits as its factorization.

31545025051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 31545025051 its reverse (15052054513), we get a palindrome (46597079564).

It can be divided in two parts, 3154 and 5025051, that added together give a palindrome (5028205).

The spelling of 31545025051 in words is "thirty-one billion, five hundred forty-five million, twenty-five thousand, fifty-one".