56130312 has 128 divisors (see below), whose sum is σ = 170553600. Its totient is φ = 15052800.

The previous prime is 56130293. The next prime is 56130323. The reversal of 56130312 is 21303165.

It is a super-2 number, since 2×56130312² = 6301223850434688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199612 + ... + 199892.

It is an arithmetic number, because the mean of its divisors is an integer number (1332450).

Almost surely, 2^56130312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85276800).

56130312 is an abundant number, since it is smaller than the sum of its proper divisors (114423288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56130312 is a wasteful number, since it uses less digits than its factorization.

56130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 56130312 is about 7492.0165509694. The cubic root of 56130312 is about 382.8827660561.

Adding to 56130312 its reverse (21303165), we get a palindrome (77433477).

The spelling of 56130312 in words is "fifty-six million, one hundred thirty thousand, three hundred twelve".