231313232 has 10 divisors (see below), whose sum is σ = 448169418. Its totient is φ = 115656608.

The previous prime is 231313223. The next prime is 231313301. The reversal of 231313232 is 232313132.

231313232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 113720896 = 10844^2 + 10664^2 .

It is a super-2 number, since 2×231313232² = 107011622596571648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7228523 + ... + 7228554.

Almost surely, 2^231313232 is an apocalyptic number.

It is an amenable number.

231313232 is a deficient number, since it is larger than the sum of its proper divisors (216856186).

231313232 is a wasteful number, since it uses less digits than its factorization.

231313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14457085 (or 14457079 counting only the distinct ones).

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

The square root of 231313232 is about 15208.9852389961. The cubic root of 231313232 is about 613.8564529837.

Adding to 231313232 its reverse (232313132), we get a palindrome (463626364).

The spelling of 231313232 in words is "two hundred thirty-one million, three hundred thirteen thousand, two hundred thirty-two".