431344031387 has 2 divisors, whose sum is σ = 431344031388. Its totient is φ = 431344031386.

The previous prime is 431344031381. The next prime is 431344031471. The reversal of 431344031387 is 783130443134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431344031387 - 2²⁸ = 431075595931 is a prime.

It is a super-2 number, since 2×431344031387² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431344031381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215672015693 + 215672015694.

It is an arithmetic number, because the mean of its divisors is an integer number (215672015694).

Almost surely, 2^431344031387 is an apocalyptic number.

431344031387 is a deficient number, since it is larger than the sum of its proper divisors (1).

431344031387 is an equidigital number, since it uses as much as digits as its factorization.

431344031387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 431344031387 in words is "four hundred thirty-one billion, three hundred forty-four million, thirty-one thousand, three hundred eighty-seven".