231503116 has 12 divisors (see below), whose sum is σ = 436294432. Its totient is φ = 106847568.

The previous prime is 231503089. The next prime is 231503131. The reversal of 231503116 is 611305132.

It is a happy number.

231503116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225940 + ... + 2226043.

Almost surely, 2^231503116 is an apocalyptic number.

231503116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

231503116 is a deficient number, since it is larger than the sum of its proper divisors (204791316).

231503116 is a wasteful number, since it uses less digits than its factorization.

231503116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452000 (or 4451998 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 231503116 is about 15215.2264524719. The cubic root of 231503116 is about 614.0243777169.

Adding to 231503116 its reverse (611305132), we get a palindrome (842808248).

The spelling of 231503116 in words is "two hundred thirty-one million, five hundred three thousand, one hundred sixteen".