40199131 has 8 divisors (see below), whose sum is σ = 47183840. Its totient is φ = 33524928.

The previous prime is 40199113. The next prime is 40199153. The reversal of 40199131 is 13199104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40199131 - 2⁵ = 40199099 is a prime.

It is a super-2 number, since 2×40199131² = 3231940266310322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40199131.

It is not an unprimeable number, because it can be changed into a prime (40199161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77346 + ... + 77863.

It is an arithmetic number, because the mean of its divisors is an integer number (5897980).

Almost surely, 2^40199131 is an apocalyptic number.

40199131 is a deficient number, since it is larger than the sum of its proper divisors (6984709).

40199131 is a wasteful number, since it uses less digits than its factorization.

40199131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155253.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 40199131 is about 6340.2784639162. The cubic root of 40199131 is about 342.5617655492.

The spelling of 40199131 in words is "forty million, one hundred ninety-nine thousand, one hundred thirty-one".