431401121969 has 2 divisors, whose sum is σ = 431401121970. Its totient is φ = 431401121968.

The previous prime is 431401121941. The next prime is 431401121999. The reversal of 431401121969 is 969121104134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334764073744 + 96637048225 = 578588^2 + 310865^2 .

It is a cyclic number.

It is not a de Polignac number, because 431401121969 - 2²⁰ = 431400073393 is a prime.

It is a super-2 number, since 2×431401121969² (a number of 24 digits) contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215700560984 + 215700560985.

It is an arithmetic number, because the mean of its divisors is an integer number (215700560985).

Almost surely, 2^431401121969 is an apocalyptic number.

It is an amenable number.

431401121969 is a deficient number, since it is larger than the sum of its proper divisors (1).

431401121969 is an equidigital number, since it uses as much as digits as its factorization.

431401121969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 431401121969 in words is "four hundred thirty-one billion, four hundred one million, one hundred twenty-one thousand, nine hundred sixty-nine".