431400989927 has 2 divisors, whose sum is σ = 431400989928. Its totient is φ = 431400989926.

The previous prime is 431400989879. The next prime is 431400989933. The reversal of 431400989927 is 729989004134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431400989927 - 2²⁰ = 431399941351 is a prime.

It is a super-2 number, since 2×431400989927² (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 (431400989827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215700494963 + 215700494964.

It is an arithmetic number, because the mean of its divisors is an integer number (215700494964).

Almost surely, 2^431400989927 is an apocalyptic number.

431400989927 is a deficient number, since it is larger than the sum of its proper divisors (1).

431400989927 is an equidigital number, since it uses as much as digits as its factorization.

431400989927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 431400989927 in words is "four hundred thirty-one billion, four hundred million, nine hundred eighty-nine thousand, nine hundred twenty-seven".