231022859 has 2 divisors, whose sum is σ = 231022860. Its totient is φ = 231022858.

The previous prime is 231022837. The next prime is 231022867. The reversal of 231022859 is 958220132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231022859 - 2²⁴ = 214245643 is a prime.

It is a super-2 number, since 2×231022859² = 106743122761067762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231022829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511429 + 115511430.

It is an arithmetic number, because the mean of its divisors is an integer number (115511430).

Almost surely, 2^231022859 is an apocalyptic number.

231022859 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022859 is an equidigital number, since it uses as much as digits as its factorization.

231022859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 231022859 is about 15199.4361408573. The cubic root of 231022859 is about 613.5994825597.

The spelling of 231022859 in words is "two hundred thirty-one million, twenty-two thousand, eight hundred fifty-nine".