431401121999 has 2 divisors, whose sum is σ = 431401122000. Its totient is φ = 431401121998.

The previous prime is 431401121969. The next prime is 431401122017. The reversal of 431401121999 is 999121104134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431401121999 is a prime.

It is a super-2 number, since 2×431401121999² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431401121929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215700560999 + 215700561000.

It is an arithmetic number, because the mean of its divisors is an integer number (215700561000).

Almost surely, 2^431401121999 is an apocalyptic number.

431401121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

431401121999 is an equidigital number, since it uses as much as digits as its factorization.

431401121999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 431401121999 in words is "four hundred thirty-one billion, four hundred one million, one hundred twenty-one thousand, nine hundred ninety-nine".