31277117051 has 2 divisors, whose sum is σ = 31277117052. Its totient is φ = 31277117050.

The previous prime is 31277116991. The next prime is 31277117059. The reversal of 31277117051 is 15071177213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31277117051 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31277117059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15638558525 + 15638558526.

It is an arithmetic number, because the mean of its divisors is an integer number (15638558526).

Almost surely, 2^31277117051 is an apocalyptic number.

31277117051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31277117051 is an equidigital number, since it uses as much as digits as its factorization.

31277117051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290, while the sum is 35.

The spelling of 31277117051 in words is "thirty-one billion, two hundred seventy-seven million, one hundred seventeen thousand, fifty-one".