31230687601 has 2 divisors, whose sum is σ = 31230687602. Its totient is φ = 31230687600.

The previous prime is 31230687571. The next prime is 31230687611. The reversal of 31230687601 is 10678603213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26943581025 + 4287106576 = 164145^2 + 65476^2 .

It is a cyclic number.

It is not a de Polignac number, because 31230687601 - 2²⁵ = 31197133169 is a prime.

It is not a weakly prime, because it can be changed into another prime (31230687611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615343800 + 15615343801.

It is an arithmetic number, because the mean of its divisors is an integer number (15615343801).

Almost surely, 2^31230687601 is an apocalyptic number.

It is an amenable number.

31230687601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230687601 is an equidigital number, since it uses as much as digits as its factorization.

31230687601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 31230687601 in words is "thirty-one billion, two hundred thirty million, six hundred eighty-seven thousand, six hundred one".