1231231252 has 12 divisors (see below), whose sum is σ = 2155126176. Its totient is φ = 615480920.

The previous prime is 1231231237. The next prime is 1231231301. The reversal of 1231231252 is 2521321321.

It is a congruent number.

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, 11488 + ... + 50935.

It is an arithmetic number, because the mean of its divisors is an integer number (179593848).

Almost surely, 2^1231231252 is an apocalyptic number.

It is an amenable number.

1231231252 is a deficient number, since it is larger than the sum of its proper divisors (923894924).

1231231252 is a wasteful number, since it uses less digits than its factorization.

1231231252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67358 (or 67356 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1231231252 is about 35088.9049700899. The cubic root of 1231231252 is about 1071.7986610905.

Adding to 1231231252 its reverse (2521321321), we get a palindrome (3752552573).

The spelling of 1231231252 in words is "one billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred fifty-two".