40450131 has 8 divisors (see below), whose sum is σ = 59926160. Its totient is φ = 26966736.

The previous prime is 40450121. The next prime is 40450153. The reversal of 40450131 is 13105404.

It is a happy number.

It is not a de Polignac number, because 40450131 - 2²² = 36255827 is a prime.

It is a super-2 number, since 2×40450131² = 3272426195834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40450121) 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, 749050 + ... + 749103.

It is an arithmetic number, because the mean of its divisors is an integer number (7490770).

Almost surely, 2^40450131 is an apocalyptic number.

40450131 is a deficient number, since it is larger than the sum of its proper divisors (19476029).

40450131 is a wasteful number, since it uses less digits than its factorization.

40450131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498162 (or 1498156 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40450131 is about 6360.0417451460. The cubic root of 40450131 is about 343.2732623928.

Adding to 40450131 its reverse (13105404), we get a palindrome (53555535).

The spelling of 40450131 in words is "forty million, four hundred fifty thousand, one hundred thirty-one".