31744974520019 has 2 divisors, whose sum is σ = 31744974520020. Its totient is φ = 31744974520018.

The previous prime is 31744974519949. The next prime is 31744974520057. The reversal of 31744974520019 is 91002547944713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31744974520019 is a prime.

It is a super-2 number, since 2×31744974520019² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31744974529019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15872487260009 + 15872487260010.

It is an arithmetic number, because the mean of its divisors is an integer number (15872487260010).

Almost surely, 2^{31744974520019} is an apocalyptic number.

31744974520019 is a deficient number, since it is larger than the sum of its proper divisors (1).

31744974520019 is an equidigital number, since it uses as much as digits as its factorization.

31744974520019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 31744974520019 in words is "thirty-one trillion, seven hundred forty-four billion, nine hundred seventy-four million, five hundred twenty thousand, nineteen".