431143039939 has 2 divisors, whose sum is σ = 431143039940. Its totient is φ = 431143039938.

The previous prime is 431143039919. The next prime is 431143040033. The reversal of 431143039939 is 939930341134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431143039939 - 2⁹ = 431143039427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431143039892 and 431143039901.

It is not a weakly prime, because it can be changed into another prime (431143039919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215571519969 + 215571519970.

It is an arithmetic number, because the mean of its divisors is an integer number (215571519970).

Almost surely, 2^431143039939 is an apocalyptic number.

431143039939 is a deficient number, since it is larger than the sum of its proper divisors (1).

431143039939 is an equidigital number, since it uses as much as digits as its factorization.

431143039939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 49.

The spelling of 431143039939 in words is "four hundred thirty-one billion, one hundred forty-three million, thirty-nine thousand, nine hundred thirty-nine".