231936330 has 32 divisors (see below), whose sum is σ = 564277824. Its totient is φ = 61001856.

The previous prime is 231936323. The next prime is 231936343. The reversal of 231936330 is 33639132.

It is a super-2 number, since 2×231936330² = 107588922347737800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50764 + ... + 55143.

It is an arithmetic number, because the mean of its divisors is an integer number (17633682).

Almost surely, 2^231936330 is an apocalyptic number.

231936330 is an abundant number, since it is smaller than the sum of its proper divisors (332341494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231936330 is a wasteful number, since it uses less digits than its factorization.

231936330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105990.

The product of its (nonzero) digits is 8748, while the sum is 30.

The square root of 231936330 is about 15229.4559981636. The cubic root of 231936330 is about 614.4071489562.

The spelling of 231936330 in words is "two hundred thirty-one million, nine hundred thirty-six thousand, three hundred thirty".