40322312431 has 2 divisors, whose sum is σ = 40322312432. Its totient is φ = 40322312430.

The previous prime is 40322312389. The next prime is 40322312441. The reversal of 40322312431 is 13421322304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40322312431 - 2¹¹ = 40322310383 is a prime.

It is a super-2 number, since 2×40322312431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40322312396 and 40322312405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40322312441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20161156215 + 20161156216.

It is an arithmetic number, because the mean of its divisors is an integer number (20161156216).

Almost surely, 2^40322312431 is an apocalyptic number.

40322312431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40322312431 is an equidigital number, since it uses as much as digits as its factorization.

40322312431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 40322312431 its reverse (13421322304), we get a palindrome (53743634735).

The spelling of 40322312431 in words is "forty billion, three hundred twenty-two million, three hundred twelve thousand, four hundred thirty-one".