231155430 has 32 divisors (see below), whose sum is σ = 605207808. Its totient is φ = 56037600.

The previous prime is 231155411. The next prime is 231155459. The reversal of 231155430 is 34551132.

It is a self number, because there is not a number n which added to its sum of digits gives 231155430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349906 + ... + 350565.

It is an arithmetic number, because the mean of its divisors is an integer number (18912744).

Almost surely, 2^231155430 is an apocalyptic number.

231155430 is an abundant number, since it is smaller than the sum of its proper divisors (374052378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231155430 is a wasteful number, since it uses less digits than its factorization.

231155430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700492.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 231155430 is about 15203.7965653320. The cubic root of 231155430 is about 613.7168301712.

The spelling of 231155430 in words is "two hundred thirty-one million, one hundred fifty-five thousand, four hundred thirty".