5131213313 has 4 divisors (see below), whose sum is σ = 5354309568. Its totient is φ = 4908117060.

The previous prime is 5131213249. The next prime is 5131213319. The reversal of 5131213313 is 3133121315.

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 5131213313 - 2⁶ = 5131213249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 223096231 = 5131213313 / (5 + 1 + 3 + 1 + 2 + 1 + 3 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131213319) 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, 111548093 + ... + 111548138.

It is an arithmetic number, because the mean of its divisors is an integer number (1338577392).

Almost surely, 2^5131213313 is an apocalyptic number.

It is an amenable number.

5131213313 is a deficient number, since it is larger than the sum of its proper divisors (223096255).

5131213313 is a wasteful number, since it uses less digits than its factorization.

5131213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223096254.

The product of its digits is 810, while the sum is 23.

The square root of 5131213313 is about 71632.4878319886. The cubic root of 5131213313 is about 1724.8050820017.

Adding to 5131213313 its reverse (3133121315), we get a palindrome (8264334628).

The spelling of 5131213313 in words is "five billion, one hundred thirty-one million, two hundred thirteen thousand, three hundred thirteen".