5205204731 has 4 divisors (see below), whose sum is σ = 5293428600. Its totient is φ = 5116980864.

The previous prime is 5205204713. The next prime is 5205204743. The reversal of 5205204731 is 1374025025.

It is a happy number.

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 5205204731 - 2²² = 5201010427 is a prime.

It is a super-2 number, since 2×5205204731² = 54188312583249564722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5205204694 and 5205204703.

It is not an unprimeable number, because it can be changed into a prime (5205204791) 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, 44111846 + ... + 44111963.

It is an arithmetic number, because the mean of its divisors is an integer number (1323357150).

Almost surely, 2^5205204731 is an apocalyptic number.

5205204731 is a deficient number, since it is larger than the sum of its proper divisors (88223869).

5205204731 is an equidigital number, since it uses as much as digits as its factorization.

5205204731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88223868.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 5205204731 is about 72147.1047998463. The cubic root of 5205204731 is about 1733.0560360852.

Adding to 5205204731 its reverse (1374025025), we get a palindrome (6579229756).

The spelling of 5205204731 in words is "five billion, two hundred five million, two hundred four thousand, seven hundred thirty-one".