431031427 has 2 divisors, whose sum is σ = 431031428. Its totient is φ = 431031426.

The previous prime is 431031373. The next prime is 431031439. The reversal of 431031427 is 724130134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431031427 - 2⁷ = 431031299 is a prime.

It is not a weakly prime, because it can be changed into another prime (431031467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215515713 + 215515714.

It is an arithmetic number, because the mean of its divisors is an integer number (215515714).

Almost surely, 2^431031427 is an apocalyptic number.

431031427 is a deficient number, since it is larger than the sum of its proper divisors (1).

431031427 is an equidigital number, since it uses as much as digits as its factorization.

431031427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 431031427 is about 20761.2963708917. The cubic root of 431031427 is about 755.3872416656.

The spelling of 431031427 in words is "four hundred thirty-one million, thirty-one thousand, four hundred twenty-seven".