431354881 has 2 divisors, whose sum is σ = 431354882. Its totient is φ = 431354880.

The previous prime is 431354879. The next prime is 431354927. The reversal of 431354881 is 188453134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407393856 + 23961025 = 20184^2 + 4895^2 .

It is a cyclic number.

It is not a de Polignac number, because 431354881 - 2¹ = 431354879 is a prime.

It is a super-3 number, since 3×431354881³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 431354879, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 431354881.

It is not a weakly prime, because it can be changed into another prime (431354081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215677440 + 215677441.

It is an arithmetic number, because the mean of its divisors is an integer number (215677441).

Almost surely, 2^431354881 is an apocalyptic number.

It is an amenable number.

431354881 is a deficient number, since it is larger than the sum of its proper divisors (1).

431354881 is an equidigital number, since it uses as much as digits as its factorization.

431354881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 431354881 is about 20769.0847415094. The cubic root of 431354881 is about 755.5761466330.

The spelling of 431354881 in words is "four hundred thirty-one million, three hundred fifty-four thousand, eight hundred eighty-one".