31073532641 has 2 divisors, whose sum is σ = 31073532642. Its totient is φ = 31073532640.

The previous prime is 31073532617. The next prime is 31073532647. The reversal of 31073532641 is 14623537013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24689522641 + 6384010000 = 157129^2 + 79900^2 .

It is a cyclic number.

It is not a de Polignac number, because 31073532641 - 2²² = 31069338337 is a prime.

It is not a weakly prime, because it can be changed into another prime (31073532647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15536766320 + 15536766321.

It is an arithmetic number, because the mean of its divisors is an integer number (15536766321).

Almost surely, 2^31073532641 is an apocalyptic number.

It is an amenable number.

31073532641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31073532641 is an equidigital number, since it uses as much as digits as its factorization.

31073532641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 31073532641 in words is "thirty-one billion, seventy-three million, five hundred thirty-two thousand, six hundred forty-one".