31140043757 has 2 divisors, whose sum is σ = 31140043758. Its totient is φ = 31140043756.

The previous prime is 31140043733. The next prime is 31140043789. The reversal of 31140043757 is 75734004113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31010857801 + 129185956 = 176099^2 + 11366^2 .

It is a cyclic number.

It is not a de Polignac number, because 31140043757 - 2²⁸ = 30871608301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31140043057) 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, 15570021878 + 15570021879.

It is an arithmetic number, because the mean of its divisors is an integer number (15570021879).

Almost surely, 2^31140043757 is an apocalyptic number.

It is an amenable number.

31140043757 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140043757 is an equidigital number, since it uses as much as digits as its factorization.

31140043757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 31140043757 in words is "thirty-one billion, one hundred forty million, forty-three thousand, seven hundred fifty-seven".