40031213023 has 2 divisors, whose sum is σ = 40031213024. Its totient is φ = 40031213022.

The previous prime is 40031212999. The next prime is 40031213077. The reversal of 40031213023 is 32031213004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40031213023 - 2¹³ = 40031204831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40031213623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015606511 + 20015606512.

It is an arithmetic number, because the mean of its divisors is an integer number (20015606512).

Almost surely, 2^40031213023 is an apocalyptic number.

40031213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40031213023 is an equidigital number, since it uses as much as digits as its factorization.

40031213023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Subtracting from 40031213023 its sum of digits (19), we obtain a palindrome (40031213004).

Adding to 40031213023 its reverse (32031213004), we get a palindrome (72062426027).

The spelling of 40031213023 in words is "forty billion, thirty-one million, two hundred thirteen thousand, twenty-three".