56431011 has 32 divisors (see below), whose sum is σ = 93603328. Its totient is φ = 29445120.

The previous prime is 56431009. The next prime is 56431057. The reversal of 56431011 is 11013465.

56431011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56431011 - 2¹ = 56431009 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (56431091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25416 + ... + 27546.

It is an arithmetic number, because the mean of its divisors is an integer number (2925104).

Almost surely, 2^56431011 is an apocalyptic number.

56431011 is a deficient number, since it is larger than the sum of its proper divisors (37172317).

56431011 is a wasteful number, since it uses less digits than its factorization.

56431011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 56431011 is about 7512.0577074461. The cubic root of 56431011 is about 383.5652700139.

Adding to 56431011 its reverse (11013465), we get a palindrome (67444476).

The spelling of 56431011 in words is "fifty-six million, four hundred thirty-one thousand, eleven".