40031013023 has 2 divisors, whose sum is σ = 40031013024. Its totient is φ = 40031013022.

The previous prime is 40031012981. The next prime is 40031013119. The reversal of 40031013023 is 32031013004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40031013023 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 40031012992 and 40031013010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40031018023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015506511 + 20015506512.

It is an arithmetic number, because the mean of its divisors is an integer number (20015506512).

Almost surely, 2^40031013023 is an apocalyptic number.

40031013023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40031013023 is an equidigital number, since it uses as much as digits as its factorization.

40031013023 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 17.

Adding to 40031013023 its reverse (32031013004), we get a palindrome (72062026027).

The spelling of 40031013023 in words is "forty billion, thirty-one million, thirteen thousand, twenty-three".