1312501902 has 8 divisors (see below), whose sum is σ = 2625003816. Its totient is φ = 437500632.

The previous prime is 1312501891. The next prime is 1312501903. The reversal of 1312501902 is 2091052131.

It is a sphenic number, since it is the product of 3 distinct primes.

1312501902 is an admirable number.

It is a super-2 number, since 2×1312501902² = 3445322485507235208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312501903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109375153 + ... + 109375164.

It is an arithmetic number, because the mean of its divisors is an integer number (328125477).

Almost surely, 2^1312501902 is an apocalyptic number.

1312501902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1312501902 is a wasteful number, since it uses less digits than its factorization.

1312501902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218750322.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1312501902 is about 36228.4681155580. The cubic root of 1312501902 is about 1094.8803138508.

The spelling of 1312501902 in words is "one billion, three hundred twelve million, five hundred one thousand, nine hundred two".