40015440131 has 2 divisors, whose sum is σ = 40015440132. Its totient is φ = 40015440130.

The previous prime is 40015440053. The next prime is 40015440187. The reversal of 40015440131 is 13104451004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40015440131 - 2¹⁸ = 40015177987 is a prime.

It is a super-2 number, since 2×40015440131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40015440097 and 40015440106.

It is not a weakly prime, because it can be changed into another prime (40015410131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20007720065 + 20007720066.

It is an arithmetic number, because the mean of its divisors is an integer number (20007720066).

Almost surely, 2^40015440131 is an apocalyptic number.

40015440131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40015440131 is an equidigital number, since it uses as much as digits as its factorization.

40015440131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40015440131 its reverse (13104451004), we get a palindrome (53119891135).

The spelling of 40015440131 in words is "forty billion, fifteen million, four hundred forty thousand, one hundred thirty-one".