40166331 has 4 divisors (see below), whose sum is σ = 53555112. Its totient is φ = 26777552.

The previous prime is 40166327. The next prime is 40166353. The reversal of 40166331 is 13366104.

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 40166331 - 2² = 40166327 is a prime.

It is a super-2 number, since 2×40166331² = 3226668292003122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40166311) 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, 6694386 + ... + 6694391.

It is an arithmetic number, because the mean of its divisors is an integer number (13388778).

Almost surely, 2^40166331 is an apocalyptic number.

40166331 is a deficient number, since it is larger than the sum of its proper divisors (13388781).

40166331 is a wasteful number, since it uses less digits than its factorization.

40166331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388780.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40166331 is about 6337.6912988879. The cubic root of 40166331 is about 342.4685704727.

The spelling of 40166331 in words is "forty million, one hundred sixty-six thousand, three hundred thirty-one".