5031561313 has 4 divisors (see below), whose sum is σ = 5046492100. Its totient is φ = 5016630528.

The previous prime is 5031561263. The next prime is 5031561319. The reversal of 5031561313 is 3131651305.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2280349009 + 2751212304 = 47753^2 + 52452^2 .

It is a de Polignac number, because none of the positive numbers 2^k-5031561313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5031561319) 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, 7464888 + ... + 7465561.

It is an arithmetic number, because the mean of its divisors is an integer number (1261623025).

Almost surely, 2^5031561313 is an apocalyptic number.

It is an amenable number.

5031561313 is a deficient number, since it is larger than the sum of its proper divisors (14930787).

5031561313 is a wasteful number, since it uses less digits than its factorization.

5031561313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14930786.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 5031561313 is about 70933.4992299125. The cubic root of 5031561313 is about 1713.5663418063.

It can be divided in two parts, 50315 and 61313, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 5031561313 in words is "five billion, thirty-one million, five hundred sixty-one thousand, three hundred thirteen".