231761307730 has 16 divisors (see below), whose sum is σ = 417324169944. Its totient is φ = 92670341760.

The previous prime is 231761307709. The next prime is 231761307763. The reversal of 231761307730 is 37703167132.

231761307730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 226249581649 + 5511726081 = 475657^2 + 74241^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4244181 + ... + 4298440.

Almost surely, 2^231761307730 is an apocalyptic number.

231761307730 is a deficient number, since it is larger than the sum of its proper divisors (185562862214).

231761307730 is a wasteful number, since it uses less digits than its factorization.

231761307730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545341.

The product of its (nonzero) digits is 111132, while the sum is 40.

The spelling of 231761307730 in words is "two hundred thirty-one billion, seven hundred sixty-one million, three hundred seven thousand, seven hundred thirty".