40243030131 has 16 divisors (see below), whose sum is σ = 55541510144. Its totient is φ = 25898037984.

The previous prime is 40243030129. The next prime is 40243030141. The reversal of 40243030131 is 13103034204.

It is not a de Polignac number, because 40243030131 - 2¹ = 40243030129 is a prime.

It is a super-2 number, since 2×40243030131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40243030098 and 40243030107.

It is not an unprimeable number, because it can be changed into a prime (40243030141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413265 + ... + 1441458.

It is an arithmetic number, because the mean of its divisors is an integer number (3471344384).

Almost surely, 2^40243030131 is an apocalyptic number.

40243030131 is a deficient number, since it is larger than the sum of its proper divisors (15298480013).

40243030131 is a wasteful number, since it uses less digits than its factorization.

40243030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854890.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40243030131 its reverse (13103034204), we get a palindrome (53346064335).

The spelling of 40243030131 in words is "forty billion, two hundred forty-three million, thirty thousand, one hundred thirty-one".