231890366 has 8 divisors (see below), whose sum is σ = 349222104. Its totient is φ = 115483000.

The previous prime is 231890363. The next prime is 231890369. The reversal of 231890366 is 663098132.

It is an interprime number because it is at equal distance from previous prime (231890363) and next prime (231890369).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×231890366² = 107546283687227912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231890363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230465 + ... + 231468.

It is an arithmetic number, because the mean of its divisors is an integer number (43652763).

Almost surely, 2^231890366 is an apocalyptic number.

231890366 is a deficient number, since it is larger than the sum of its proper divisors (117331738).

231890366 is a wasteful number, since it uses less digits than its factorization.

231890366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462186.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 231890366 is about 15227.9468740865. The cubic root of 231890366 is about 614.3665595468.

The spelling of 231890366 in words is "two hundred thirty-one million, eight hundred ninety thousand, three hundred sixty-six".