5031620731 has 4 divisors (see below), whose sum is σ = 5048793792. Its totient is φ = 5014447672.

The previous prime is 5031620729. The next prime is 5031620777. The reversal of 5031620731 is 1370261305.

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

It is a cyclic number.

It is not a de Polignac number, because 5031620731 - 2¹ = 5031620729 is a prime.

It is a super-2 number, since 2×5031620731² = 50634414361257948722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5031620731.

It is not an unprimeable number, because it can be changed into a prime (5031620131) 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, 8586091 + ... + 8586676.

It is an arithmetic number, because the mean of its divisors is an integer number (1262198448).

Almost surely, 2^5031620731 is an apocalyptic number.

5031620731 is a deficient number, since it is larger than the sum of its proper divisors (17173061).

5031620731 is a wasteful number, since it uses less digits than its factorization.

5031620731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17173060.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 5031620731 is about 70933.9180575837. The cubic root of 5031620731 is about 1713.5730869813.

The spelling of 5031620731 in words is "five billion, thirty-one million, six hundred twenty thousand, seven hundred thirty-one".