1231313332 has 24 divisors (see below), whose sum is σ = 2330100864. Its totient is φ = 567111552.

The previous prime is 1231313329. The next prime is 1231313339. The reversal of 1231313332 is 2333131321.

It is a super-2 number, since 2×1231313332² = 3032265043121884448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231313339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189438 + ... + 195829.

It is an arithmetic number, because the mean of its divisors is an integer number (97087536).

Almost surely, 2^1231313332 is an apocalyptic number.

It is an amenable number.

1231313332 is a deficient number, since it is larger than the sum of its proper divisors (1098787532).

1231313332 is a wasteful number, since it uses less digits than its factorization.

1231313332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385335 (or 385333 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 1231313332 is about 35090.0745510750. The cubic root of 1231313332 is about 1071.8224777048.

Adding to 1231313332 its reverse (2333131321), we get a palindrome (3564444653).

The spelling of 1231313332 in words is "one billion, two hundred thirty-one million, three hundred thirteen thousand, three hundred thirty-two".