56136431 has 32 divisors (see below), whose sum is σ = 69854400. Its totient is φ = 44513280.

The previous prime is 56136403. The next prime is 56136461. The reversal of 56136431 is 13463165.

56136431 = T₂₀₉ + T₂₁₀ + ... + T₇₀₁.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56136431 - 2¹⁴ = 56120047 is a prime.

It is a super-2 number, since 2×56136431² = 6302597770835522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56136394 and 56136403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56136461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121541 + ... + 122001.

It is an arithmetic number, because the mean of its divisors is an integer number (2182950).

Almost surely, 2^56136431 is an apocalyptic number.

56136431 is a deficient number, since it is larger than the sum of its proper divisors (13717969).

56136431 is a wasteful number, since it uses less digits than its factorization.

56136431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 6480, while the sum is 29.

The square root of 56136431 is about 7492.4249078653. The cubic root of 56136431 is about 382.8966787676.

Adding to 56136431 its reverse (13463165), we get a palindrome (69599596).

The spelling of 56136431 in words is "fifty-six million, one hundred thirty-six thousand, four hundred thirty-one".