56320131631 has 12 divisors (see below), whose sum is σ = 57584104920. Its totient is φ = 55083349520.

The previous prime is 56320131557. The next prime is 56320131643. The reversal of 56320131631 is 13613102365.

It is not a de Polignac number, because 56320131631 - 2¹⁷ = 56320000559 is a prime.

It is a super-3 number, since 3×56320131631³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56320131593 and 56320131602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56320131431) 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 11 ways as a sum of consecutive naturals, for example, 3462225 + ... + 3478453.

It is an arithmetic number, because the mean of its divisors is an integer number (4798675410).

Almost surely, 2^56320131631 is an apocalyptic number.

56320131631 is a deficient number, since it is larger than the sum of its proper divisors (1263973289).

56320131631 is a wasteful number, since it uses less digits than its factorization.

56320131631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17894 (or 17847 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 56320131631 its reverse (13613102365), we get a palindrome (69933233996).

The spelling of 56320131631 in words is "fifty-six billion, three hundred twenty million, one hundred thirty-one thousand, six hundred thirty-one".