431220000091 has 2 divisors, whose sum is σ = 431220000092. Its totient is φ = 431220000090.

The previous prime is 431220000049. The next prime is 431220000119. The reversal of 431220000091 is 190000022134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431220000091 - 2³¹ = 429072516443 is a prime.

It is not a weakly prime, because it can be changed into another prime (431220000031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215610000045 + 215610000046.

It is an arithmetic number, because the mean of its divisors is an integer number (215610000046).

Almost surely, 2^431220000091 is an apocalyptic number.

431220000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

431220000091 is an equidigital number, since it uses as much as digits as its factorization.

431220000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 431220000091 in words is "four hundred thirty-one billion, two hundred twenty million, ninety-one", and thus it is an aban number.