7313993137 has 4 divisors (see below), whose sum is σ = 7978901616. Its totient is φ = 6649084660.

The previous prime is 7313993131. The next prime is 7313993143.

7313993137 is nontrivially palindromic in base 10.

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 an interprime number because it is at equal distance from previous prime (7313993131) and next prime (7313993143).

It is a cyclic number.

It is not a de Polignac number, because 7313993137 - 2³ = 7313993129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7313993131) 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, 332454223 + ... + 332454244.

It is an arithmetic number, because the mean of its divisors is an integer number (1994725404).

Almost surely, 2^7313993137 is an apocalyptic number.

It is an amenable number.

7313993137 is a deficient number, since it is larger than the sum of its proper divisors (664908479).

7313993137 is a wasteful number, since it uses less digits than its factorization.

7313993137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664908478.

The product of its digits is 321489, while the sum is 46.

The square root of 7313993137 is about 85521.8868886790. The cubic root of 7313993137 is about 1941.1161198054.

The spelling of 7313993137 in words is "seven billion, three hundred thirteen million, nine hundred ninety-three thousand, one hundred thirty-seven".