31745756051 has 2 divisors, whose sum is σ = 31745756052. Its totient is φ = 31745756050.

The previous prime is 31745756033. The next prime is 31745756099. The reversal of 31745756051 is 15065754713.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31745756051 - 2¹⁸ = 31745493907 is a prime.

It is a super-2 number, since 2×31745756051² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31745755993 and 31745756011.

It is not a weakly prime, because it can be changed into another prime (31745756011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15872878025 + 15872878026.

It is an arithmetic number, because the mean of its divisors is an integer number (15872878026).

Almost surely, 2^31745756051 is an apocalyptic number.

31745756051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31745756051 is an equidigital number, since it uses as much as digits as its factorization.

31745756051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 31745756051 in words is "thirty-one billion, seven hundred forty-five million, seven hundred fifty-six thousand, fifty-one".