1231331332 has 36 divisors (see below), whose sum is σ = 2706901120. Its totient is φ = 479738160.

The previous prime is 1231331263. The next prime is 1231331371. The reversal of 1231331332 is 2331331321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178332 + ... + 185107.

Almost surely, 2^1231331332 is an apocalyptic number.

It is an amenable number.

1231331332 is an abundant number, since it is smaller than the sum of its proper divisors (1475569788).

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

1231331332 is a wasteful number, since it uses less digits than its factorization.

1231331332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363472 (or 363459 counting only the distinct ones).

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

The square root of 1231331332 is about 35090.3310329213. The cubic root of 1231331332 is about 1071.8277005050.

Adding to 1231331332 its reverse (2331331321), we get a palindrome (3562662653).

The spelling of 1231331332 in words is "one billion, two hundred thirty-one million, three hundred thirty-one thousand, three hundred thirty-two".