40447072331 has 2 divisors, whose sum is σ = 40447072332. Its totient is φ = 40447072330.

The previous prime is 40447072321. The next prime is 40447072381. The reversal of 40447072331 is 13327074404.

40447072331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40447072331 - 2¹⁰ = 40447071307 is a prime.

It is a super-2 number, since 2×40447072331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40447072291 and 40447072300.

It is not a weakly prime, because it can be changed into another prime (40447072321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20223536165 + 20223536166.

It is an arithmetic number, because the mean of its divisors is an integer number (20223536166).

Almost surely, 2^40447072331 is an apocalyptic number.

40447072331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40447072331 is an equidigital number, since it uses as much as digits as its factorization.

40447072331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 40447072331 in words is "forty billion, four hundred forty-seven million, seventy-two thousand, three hundred thirty-one".