40020403331 has 2 divisors, whose sum is σ = 40020403332. Its totient is φ = 40020403330.

The previous prime is 40020403309. The next prime is 40020403337. The reversal of 40020403331 is 13330402004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40020403331 - 2²² = 40016209027 is a prime.

It is a super-2 number, since 2×40020403331² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40020403337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010201665 + 20010201666.

It is an arithmetic number, because the mean of its divisors is an integer number (20010201666).

Almost surely, 2^40020403331 is an apocalyptic number.

40020403331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020403331 is an equidigital number, since it uses as much as digits as its factorization.

40020403331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 40020403331 its reverse (13330402004), we get a palindrome (53350805335).

The spelling of 40020403331 in words is "forty billion, twenty million, four hundred three thousand, three hundred thirty-one".