231433130 has 16 divisors (see below), whose sum is σ = 434692224. Its totient is φ = 88548240.

The previous prime is 231433099. The next prime is 231433159. The reversal of 231433130 is 31334132.

It is a super-2 number, since 2×231433130² = 107122587323193800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502886 + ... + 503345.

It is an arithmetic number, because the mean of its divisors is an integer number (27168264).

Almost surely, 2^231433130 is an apocalyptic number.

231433130 is a deficient number, since it is larger than the sum of its proper divisors (203259094).

231433130 is a wasteful number, since it uses less digits than its factorization.

231433130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006261.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 231433130 is about 15212.9264114437. The cubic root of 231433130 is about 613.9624959851.

Adding to 231433130 its reverse (31334132), we get a palindrome (262767262).

The spelling of 231433130 in words is "two hundred thirty-one million, four hundred thirty-three thousand, one hundred thirty".