56730031 has 16 divisors (see below), whose sum is σ = 60037120. Its totient is φ = 53537760.

The previous prime is 56730017. The next prime is 56730041. The reversal of 56730031 is 13003765.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56730031 - 2⁵ = 56729999 is a prime.

It is a super-2 number, since 2×56730031² = 6436592834521922, 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 = 56729978 and 56730005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56730041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347956 + ... + 348118.

It is an arithmetic number, because the mean of its divisors is an integer number (3752320).

Almost surely, 2^56730031 is an apocalyptic number.

56730031 is a deficient number, since it is larger than the sum of its proper divisors (3307089).

56730031 is a wasteful number, since it uses less digits than its factorization.

56730031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 56730031 is about 7531.9340809649. The cubic root of 56730031 is about 384.2415630506.

Adding to 56730031 its reverse (13003765), we get a palindrome (69733796).

The spelling of 56730031 in words is "fifty-six million, seven hundred thirty thousand, thirty-one".