1312313442 has 16 divisors (see below), whose sum is σ = 2863229472. Its totient is φ = 397670720.

The previous prime is 1312313411. The next prime is 1312313473. The reversal of 1312313442 is 2443132131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312313411) and next prime (1312313473).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9941703 + ... + 9941834.

It is an arithmetic number, because the mean of its divisors is an integer number (178951842).

Almost surely, 2^1312313442 is an apocalyptic number.

1312313442 is an abundant number, since it is smaller than the sum of its proper divisors (1550916030).

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

1312313442 is a wasteful number, since it uses less digits than its factorization.

1312313442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883553.

The product of its digits is 1728, while the sum is 24.

The square root of 1312313442 is about 36225.8670289615. The cubic root of 1312313442 is about 1094.8279073183.

Adding to 1312313442 its reverse (2443132131), we get a palindrome (3755445573).

It can be divided in two parts, 13123 and 13442, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 1312313442 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, four hundred forty-two".