1313012438 has 4 divisors (see below), whose sum is σ = 1969518660. Its totient is φ = 656506218.

The previous prime is 1313012411. The next prime is 1313012453. The reversal of 1313012438 is 8342103131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 328253108 + ... + 328253111.

It is an arithmetic number, because the mean of its divisors is an integer number (492379665).

Almost surely, 2^1313012438 is an apocalyptic number.

1313012438 is a deficient number, since it is larger than the sum of its proper divisors (656506222).

1313012438 is an equidigital number, since it uses as much as digits as its factorization.

1313012438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656506221.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1313012438 is about 36235.5134916010. The cubic root of 1313012438 is about 1095.0222573543.

Adding to 1313012438 its reverse (8342103131), we get a palindrome (9655115569).

The spelling of 1313012438 in words is "one billion, three hundred thirteen million, twelve thousand, four hundred thirty-eight".