1312658952 has 128 divisors (see below), whose sum is σ = 3693755520. Its totient is φ = 385280000.

The previous prime is 1312658933. The next prime is 1312658959. The reversal of 1312658952 is 2598562131.

It is not an unprimeable number, because it can be changed into a prime (1312658959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1872202 + ... + 1872902.

It is an arithmetic number, because the mean of its divisors is an integer number (28857465).

Almost surely, 2^1312658952 is an apocalyptic number.

1312658952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312658952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846877760).

1312658952 is an abundant number, since it is smaller than the sum of its proper divisors (2381096568).

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

1312658952 is a wasteful number, since it uses less digits than its factorization.

1312658952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 931 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 1312658952 is about 36230.6355450743. The cubic root of 1312658952 is about 1094.9239821292.

The spelling of 1312658952 in words is "one billion, three hundred twelve million, six hundred fifty-eight thousand, nine hundred fifty-two".