40244131 has 4 divisors (see below), whose sum is σ = 40263664. Its totient is φ = 40224600.

The previous prime is 40244081. The next prime is 40244137. The reversal of 40244131 is 13144204.

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 40244131 - 2²⁵ = 6689699 is a prime.

It is a super-2 number, since 2×40244131² = 3239180159890322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40244099 and 40244108.

It is not an unprimeable number, because it can be changed into a prime (40244137) 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, 6255 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (10065916).

Almost surely, 2^40244131 is an apocalyptic number.

40244131 is a deficient number, since it is larger than the sum of its proper divisors (19533).

40244131 is a wasteful number, since it uses less digits than its factorization.

40244131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40244131 is about 6343.8262113649. The cubic root of 40244131 is about 342.6895421997.

Adding to 40244131 its reverse (13144204), we get a palindrome (53388335).

The spelling of 40244131 in words is "forty million, two hundred forty-four thousand, one hundred thirty-one".