231331030 has 32 divisors (see below), whose sum is σ = 488748096. Its totient is φ = 77169024.

The previous prime is 231331007. The next prime is 231331049. The reversal of 231331030 is 30133132.

It is a junction number, because it is equal to n+sod(n) for n = 231330995 and 231331013.

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, 42069 + ... + 47248.

It is an arithmetic number, because the mean of its divisors is an integer number (15273378).

Almost surely, 2^231331030 is an apocalyptic number.

231331030 is an abundant number, since it is smaller than the sum of its proper divisors (257417066).

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

231331030 is a wasteful number, since it uses less digits than its factorization.

231331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89368.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 231331030 is about 15209.5703423864. The cubic root of 231331030 is about 613.8721966240.

Adding to 231331030 its reverse (30133132), we get a palindrome (261464162).

The spelling of 231331030 in words is "two hundred thirty-one million, three hundred thirty-one thousand, thirty".