40204044031 has 2 divisors, whose sum is σ = 40204044032. Its totient is φ = 40204044030.

The previous prime is 40204043987. The next prime is 40204044043. The reversal of 40204044031 is 13044040204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40204044031 is a prime.

It is a super-2 number, since 2×40204044031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40204043993 and 40204044011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40204045031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102022015 + 20102022016.

It is an arithmetic number, because the mean of its divisors is an integer number (20102022016).

Almost surely, 2^40204044031 is an apocalyptic number.

40204044031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204044031 is an equidigital number, since it uses as much as digits as its factorization.

40204044031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40204044031 its reverse (13044040204), we get a palindrome (53248084235).

The spelling of 40204044031 in words is "forty billion, two hundred four million, forty-four thousand, thirty-one".