1312532772 has 48 divisors (see below), whose sum is σ = 3082689792. Its totient is φ = 434649600.

The previous prime is 1312532759. The next prime is 1312532801. The reversal of 1312532772 is 2772352131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872022 + ... + 1872722.

It is an arithmetic number, because the mean of its divisors is an integer number (64222704).

Almost surely, 2^1312532772 is an apocalyptic number.

1312532772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312532772 is an abundant number, since it is smaller than the sum of its proper divisors (1770157020).

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

1312532772 is a wasteful number, since it uses less digits than its factorization.

1312532772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 1312532772 is about 36228.8941592205. The cubic root of 1312532772 is about 1094.8888976327. Note that the first 4 decimals are identical.

The spelling of 1312532772 in words is "one billion, three hundred twelve million, five hundred thirty-two thousand, seven hundred seventy-two".