5731157831 has 4 divisors (see below), whose sum is σ = 6549894672. Its totient is φ = 4912420992.

The previous prime is 5731157819. The next prime is 5731157833. The reversal of 5731157831 is 1387511375.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5731157831 is a prime.

It is a super-2 number, since 2×5731157831² = 65692340167665249122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5731157833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409368410 + ... + 409368423.

It is an arithmetic number, because the mean of its divisors is an integer number (1637473668).

Almost surely, 2^5731157831 is an apocalyptic number.

5731157831 is a deficient number, since it is larger than the sum of its proper divisors (818736841).

5731157831 is an equidigital number, since it uses as much as digits as its factorization.

5731157831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818736840.

The product of its digits is 88200, while the sum is 41.

The square root of 5731157831 is about 75704.4109084801. The cubic root of 5731157831 is about 1789.5649131361.

The spelling of 5731157831 in words is "five billion, seven hundred thirty-one million, one hundred fifty-seven thousand, eight hundred thirty-one".