231332552 has 16 divisors (see below), whose sum is σ = 473180400. Its totient is φ = 105151120.

The previous prime is 231332539. The next prime is 231332567. The reversal of 231332552 is 255233132.

It is a super-2 number, since 2×231332552² = 107029499229665408, which contains 22 as substring.

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, 1314302 + ... + 1314477.

It is an arithmetic number, because the mean of its divisors is an integer number (29573775).

Almost surely, 2^231332552 is an apocalyptic number.

231332552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231332552 is an abundant number, since it is smaller than the sum of its proper divisors (241847848).

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

231332552 is a wasteful number, since it uses less digits than its factorization.

231332552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628796 (or 2628792 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 231332552 is about 15209.6203765906. The cubic root of 231332552 is about 613.8735429075.

Adding to 231332552 its reverse (255233132), we get a palindrome (486565684).

The spelling of 231332552 in words is "two hundred thirty-one million, three hundred thirty-two thousand, five hundred fifty-two".