31503104551 has 2 divisors, whose sum is σ = 31503104552. Its totient is φ = 31503104550.

The previous prime is 31503104497. The next prime is 31503104561. The reversal of 31503104551 is 15540130513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31503104551 - 2²⁷ = 31368886823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31503104561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15751552275 + 15751552276.

It is an arithmetic number, because the mean of its divisors is an integer number (15751552276).

Almost surely, 2^31503104551 is an apocalyptic number.

31503104551 is a deficient number, since it is larger than the sum of its proper divisors (1).

31503104551 is an equidigital number, since it uses as much as digits as its factorization.

31503104551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 31503104551 in words is "thirty-one billion, five hundred three million, one hundred four thousand, five hundred fifty-one".