1314257813 has 4 divisors (see below), whose sum is σ = 1433735808. Its totient is φ = 1194779820.

The previous prime is 1314257731. The next prime is 1314257827. The reversal of 1314257813 is 3187524131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1314257813 - 2¹⁶ = 1314192277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314257843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59738981 + ... + 59739002.

It is an arithmetic number, because the mean of its divisors is an integer number (358433952).

Almost surely, 2^1314257813 is an apocalyptic number.

It is an amenable number.

1314257813 is a deficient number, since it is larger than the sum of its proper divisors (119477995).

1314257813 is a wasteful number, since it uses less digits than its factorization.

1314257813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119477994.

The product of its digits is 20160, while the sum is 35.

The square root of 1314257813 is about 36252.6938723180. The cubic root of 1314257813 is about 1095.3683526835.

The spelling of 1314257813 in words is "one billion, three hundred fourteen million, two hundred fifty-seven thousand, eight hundred thirteen".