40056311 has 4 divisors (see below), whose sum is σ = 41138952. Its totient is φ = 38973672.

The previous prime is 40056281. The next prime is 40056383. The reversal of 40056311 is 11365004.

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 40056311 - 2¹⁴ = 40039927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541265 + ... + 541338.

It is an arithmetic number, because the mean of its divisors is an integer number (10284738).

Almost surely, 2^40056311 is an apocalyptic number.

40056311 is a deficient number, since it is larger than the sum of its proper divisors (1082641).

40056311 is a wasteful number, since it uses less digits than its factorization.

40056311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082640.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40056311 is about 6329.0055300971. The cubic root of 40056311 is about 342.1555981782.

The spelling of 40056311 in words is "forty million, fifty-six thousand, three hundred eleven".