40131149 has 2 divisors, whose sum is σ = 40131150. Its totient is φ = 40131148.

The previous prime is 40131137. The next prime is 40131163. The reversal of 40131149 is 94113104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26574025 + 13557124 = 5155^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 40131149 - 2²⁰ = 39082573 is a prime.

It is a super-2 number, since 2×40131149² = 3221018240120402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40131109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065574 + 20065575.

It is an arithmetic number, because the mean of its divisors is an integer number (20065575).

Almost surely, 2^40131149 is an apocalyptic number.

It is an amenable number.

40131149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131149 is an equidigital number, since it uses as much as digits as its factorization.

40131149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 40131149 is about 6334.9150744110. The cubic root of 40131149 is about 342.3685509745.

The spelling of 40131149 in words is "forty million, one hundred thirty-one thousand, one hundred forty-nine".