30860231 has 2 divisors, whose sum is σ = 30860232. Its totient is φ = 30860230.

The previous prime is 30860213. The next prime is 30860233. The reversal of 30860231 is 13206803.

Together with previous prime (30860213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30860231 is a prime.

It is a super-2 number, since 2×30860231² = 1904707714746722, which contains 22 as substring.

Together with 30860233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30860197 and 30860206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30860233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15430115 + 15430116.

It is an arithmetic number, because the mean of its divisors is an integer number (15430116).

Almost surely, 2^30860231 is an apocalyptic number.

30860231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30860231 is an equidigital number, since it uses as much as digits as its factorization.

30860231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30860231 is about 5555.1985563074. The cubic root of 30860231 is about 313.6652381836.

The spelling of 30860231 in words is "thirty million, eight hundred sixty thousand, two hundred thirty-one".