431332139027 has 2 divisors, whose sum is σ = 431332139028. Its totient is φ = 431332139026.

The previous prime is 431332138981. The next prime is 431332139057. The reversal of 431332139027 is 720931233134.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431332139027 - 2⁸ = 431332138771 is a prime.

It is not a weakly prime, because it can be changed into another prime (431332139057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215666069513 + 215666069514.

It is an arithmetic number, because the mean of its divisors is an integer number (215666069514).

Almost surely, 2^431332139027 is an apocalyptic number.

431332139027 is a deficient number, since it is larger than the sum of its proper divisors (1).

431332139027 is an equidigital number, since it uses as much as digits as its factorization.

431332139027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 38.

The spelling of 431332139027 in words is "four hundred thirty-one billion, three hundred thirty-two million, one hundred thirty-nine thousand, twenty-seven".