40920273431 has 2 divisors, whose sum is σ = 40920273432. Its totient is φ = 40920273430.

The previous prime is 40920273421. The next prime is 40920273503. The reversal of 40920273431 is 13437202904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40920273431 - 2⁶ = 40920273367 is a prime.

It is a super-2 number, since 2×40920273431² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 40920273391 and 40920273400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40920273421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20460136715 + 20460136716.

It is an arithmetic number, because the mean of its divisors is an integer number (20460136716).

Almost surely, 2^40920273431 is an apocalyptic number.

40920273431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40920273431 is an equidigital number, since it uses as much as digits as its factorization.

40920273431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 40920273431 in words is "forty billion, nine hundred twenty million, two hundred seventy-three thousand, four hundred thirty-one".