31641150551 has 2 divisors, whose sum is σ = 31641150552. Its totient is φ = 31641150550.

The previous prime is 31641150529. The next prime is 31641150571. The reversal of 31641150551 is 15505114613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31641150551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31641150571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15820575275 + 15820575276.

It is an arithmetic number, because the mean of its divisors is an integer number (15820575276).

Almost surely, 2^31641150551 is an apocalyptic number.

31641150551 is a deficient number, since it is larger than the sum of its proper divisors (1).

31641150551 is an equidigital number, since it uses as much as digits as its factorization.

31641150551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 31641150551 in words is "thirty-one billion, six hundred forty-one million, one hundred fifty thousand, five hundred fifty-one".