40230131 has 2 divisors, whose sum is σ = 40230132. Its totient is φ = 40230130.

The previous prime is 40230119. The next prime is 40230161. The reversal of 40230131 is 13103204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40230131 is a prime.

It is a super-2 number, since 2×40230131² = 3236926880554322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40230161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115065 + 20115066.

It is an arithmetic number, because the mean of its divisors is an integer number (20115066).

Almost surely, 2^40230131 is an apocalyptic number.

40230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230131 is an equidigital number, since it uses as much as digits as its factorization.

40230131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40230131 is about 6342.7226803637. The cubic root of 40230131 is about 342.6497996756.

Adding to 40230131 its reverse (13103204), we get a palindrome (53333335).

The spelling of 40230131 in words is "forty million, two hundred thirty thousand, one hundred thirty-one".