616870231 has 2 divisors, whose sum is σ = 616870232. Its totient is φ = 616870230.

The previous prime is 616870181. The next prime is 616870307. The reversal of 616870231 is 132078616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616870231 - 2⁹ = 616869719 is a prime.

It is a super-2 number, since 2×616870231² = 761057763787986722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616870931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308435115 + 308435116.

It is an arithmetic number, because the mean of its divisors is an integer number (308435116).

Almost surely, 2^616870231 is an apocalyptic number.

616870231 is a deficient number, since it is larger than the sum of its proper divisors (1).

616870231 is an equidigital number, since it uses as much as digits as its factorization.

616870231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 616870231 is about 24836.8724077731. The cubic root of 616870231 is about 851.2646600215.

The spelling of 616870231 in words is "six hundred sixteen million, eight hundred seventy thousand, two hundred thirty-one".