56731143470231 has 4 divisors (see below), whose sum is σ = 57508282421952. Its totient is φ = 55954004518512.

The previous prime is 56731143470219. The next prime is 56731143470233. The reversal of 56731143470231 is 13207434113765.

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 56731143470231 - 2³⁴ = 56713963601047 is a prime.

It is a super-2 number, since 2×56731143470231² (a number of 28 digits) 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 (56731143470233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388569475751 + ... + 388569475896.

It is an arithmetic number, because the mean of its divisors is an integer number (14377070605488).

Almost surely, 2^{56731143470231} is an apocalyptic number.

56731143470231 is a deficient number, since it is larger than the sum of its proper divisors (777138951721).

56731143470231 is an equidigital number, since it uses as much as digits as its factorization.

56731143470231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777138951720.

The product of its (nonzero) digits is 1270080, while the sum is 47.

Adding to 56731143470231 its reverse (13207434113765), we get a palindrome (69938577583996).

The spelling of 56731143470231 in words is "fifty-six trillion, seven hundred thirty-one billion, one hundred forty-three million, four hundred seventy thousand, two hundred thirty-one".