7870231 has 2 divisors, whose sum is σ = 7870232. Its totient is φ = 7870230.

The previous prime is 7870229. The next prime is 7870241. The reversal of 7870231 is 1320787.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7870231 - 2¹ = 7870229 is a prime.

It is a super-2 number, since 2×7870231² = 123881071986722, which contains 22 as substring.

Together with 7870229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7870231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7870211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3935115 + 3935116.

It is an arithmetic number, because the mean of its divisors is an integer number (3935116).

Almost surely, 2^7870231 is an apocalyptic number.

7870231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7870231 is an equidigital number, since it uses as much as digits as its factorization.

7870231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7870231 is about 2805.3931988226. The cubic root of 7870231 is about 198.9126911764.

The spelling of 7870231 in words is "seven million, eight hundred seventy thousand, two hundred thirty-one".