1231522332 has 12 divisors (see below), whose sum is σ = 2873552136. Its totient is φ = 410507440.

The previous prime is 1231522321. The next prime is 1231522349. The reversal of 1231522332 is 2332251321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 51313419 + ... + 51313442.

It is an arithmetic number, because the mean of its divisors is an integer number (239462678).

Almost surely, 2^1231522332 is an apocalyptic number.

1231522332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231522332 is an abundant number, since it is smaller than the sum of its proper divisors (1642029804).

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

1231522332 is a wasteful number, since it uses less digits than its factorization.

1231522332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102626868 (or 102626866 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 1231522332 is about 35093.0524748133. The cubic root of 1231522332 is about 1071.8831170830.

Adding to 1231522332 its reverse (2332251321), we get a palindrome (3563773653).

The spelling of 1231522332 in words is "one billion, two hundred thirty-one million, five hundred twenty-two thousand, three hundred thirty-two".