56130031 has 4 divisors (see below), whose sum is σ = 56330064. Its totient is φ = 55930000.

The previous prime is 56130017. The next prime is 56130037. The reversal of 56130031 is 13003165.

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 56130031 - 2¹⁷ = 55998959 is a prime.

It is a super-2 number, since 2×56130031² = 6301160760121922, 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 = 56129990 and 56130008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56130037) 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, 99595 + ... + 100156.

It is an arithmetic number, because the mean of its divisors is an integer number (14082516).

Almost surely, 2^56130031 is an apocalyptic number.

56130031 is a deficient number, since it is larger than the sum of its proper divisors (200033).

56130031 is a wasteful number, since it uses less digits than its factorization.

56130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200032.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 56130031 is about 7491.9977976505. The cubic root of 56130031 is about 382.8821271248.

Adding to 56130031 its reverse (13003165), we get a palindrome (69133196).

The spelling of 56130031 in words is "fifty-six million, one hundred thirty thousand, thirty-one".