1312135152 has 40 divisors (see below), whose sum is σ = 3390998736. Its totient is φ = 437208576.

The previous prime is 1312135147. The next prime is 1312135159. The reversal of 1312135152 is 2515312131.

It is a super-2 number, since 2×1312135152² = 3443397314228126208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312135159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207948 + ... + 214164.

Almost surely, 2^1312135152 is an apocalyptic number.

1312135152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312135152 is an abundant number, since it is smaller than the sum of its proper divisors (2078863584).

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

1312135152 is a wasteful number, since it uses less digits than its factorization.

1312135152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10625 (or 10619 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 1312135152 is about 36223.4061347080. The cubic root of 1312135152 is about 1094.7783242177.

Adding to 1312135152 its reverse (2515312131), we get a palindrome (3827447283).

The spelling of 1312135152 in words is "one billion, three hundred twelve million, one hundred thirty-five thousand, one hundred fifty-two".