231266690 has 16 divisors (see below), whose sum is σ = 417088440. Its totient is φ = 92327040.

The previous prime is 231266681. The next prime is 231266729. The reversal of 231266690 is 96662132.

231266690 is digitally balanced in base 3, 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 215766721 + 15499969 = 14689^2 + 3937^2 .

It is a super-2 number, since 2×231266690² = 106968563807112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231266690.

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 7 ways as a sum of consecutive naturals, for example, 16985 + ... + 27404.

Almost surely, 2^231266690 is an apocalyptic number.

231266690 is a deficient number, since it is larger than the sum of its proper divisors (185821750).

231266690 is a wasteful number, since it uses less digits than its factorization.

231266690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44917.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 231266690 is about 15207.4550796641. The cubic root of 231266690 is about 613.8152793435.

The spelling of 231266690 in words is "two hundred thirty-one million, two hundred sixty-six thousand, six hundred ninety".