231336690 has 32 divisors (see below), whose sum is σ = 597917376. Its totient is φ = 56944320.

The previous prime is 231336667. The next prime is 231336733. The reversal of 231336690 is 96633132.

It is a super-2 number, since 2×231336690² = 107033328280312200, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 296196 + ... + 296975.

It is an arithmetic number, because the mean of its divisors is an integer number (18684918).

Almost surely, 2^231336690 is an apocalyptic number.

231336690 is an abundant number, since it is smaller than the sum of its proper divisors (366580686).

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

231336690 is a wasteful number, since it uses less digits than its factorization.

231336690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593194.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 231336690 is about 15209.7564083058. The cubic root of 231336690 is about 613.8772031412.

The spelling of 231336690 in words is "two hundred thirty-one million, three hundred thirty-six thousand, six hundred ninety".