830615231 has 4 divisors (see below), whose sum is σ = 831061992. Its totient is φ = 830168472.

The previous prime is 830615221. The next prime is 830615239. The reversal of 830615231 is 132516038.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 830615231 - 2⁶ = 830615167 is a prime.

It is a super-2 number, since 2×830615231² = 1379843323938366722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 830615194 and 830615203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830615239) 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, 220580 + ... + 224313.

It is an arithmetic number, because the mean of its divisors is an integer number (207765498).

Almost surely, 2^830615231 is an apocalyptic number.

830615231 is a deficient number, since it is larger than the sum of its proper divisors (446761).

830615231 is a wasteful number, since it uses less digits than its factorization.

830615231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446760.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 830615231 is about 28820.3960937389. The cubic root of 830615231 is about 940.0117815786.

The spelling of 830615231 in words is "eight hundred thirty million, six hundred fifteen thousand, two hundred thirty-one".