40031113231 has 2 divisors, whose sum is σ = 40031113232. Its totient is φ = 40031113230.

The previous prime is 40031113193. The next prime is 40031113303. The reversal of 40031113231 is 13231113004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40031113231 is a prime.

It is a super-2 number, since 2×40031113231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40031113199 and 40031113208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40031113631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015556615 + 20015556616.

It is an arithmetic number, because the mean of its divisors is an integer number (20015556616).

Almost surely, 2^40031113231 is an apocalyptic number.

40031113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40031113231 is an equidigital number, since it uses as much as digits as its factorization.

40031113231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 40031113231 its reverse (13231113004), we get a palindrome (53262226235).

The spelling of 40031113231 in words is "forty billion, thirty-one million, one hundred thirteen thousand, two hundred thirty-one".