1312503372 has 48 divisors (see below), whose sum is σ = 3550740480. Its totient is φ = 418478544.

The previous prime is 1312503371. The next prime is 1312503391. The reversal of 1312503372 is 2733052131.

It is a super-2 number, since 2×1312503372² = 3445330203022740768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1312503371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261708 + ... + 266675.

It is an arithmetic number, because the mean of its divisors is an integer number (73973760).

Almost surely, 2^1312503372 is an apocalyptic number.

1312503372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312503372 is an abundant number, since it is smaller than the sum of its proper divisors (2238237108).

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

1312503372 is a wasteful number, since it uses less digits than its factorization.

1312503372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528419 (or 528411 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 1312503372 is about 36228.4884034650. The cubic root of 1312503372 is about 1094.8807226054.

The spelling of 1312503372 in words is "one billion, three hundred twelve million, five hundred three thousand, three hundred seventy-two".