430981 has 2 divisors, whose sum is σ = 430982. Its totient is φ = 430980.

The previous prime is 430979. The next prime is 430987. The reversal of 430981 is 189034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297025 + 133956 = 545^2 + 366^2 .

It is a cyclic number.

It is not a de Polignac number, because 430981 - 2¹ = 430979 is a prime.

It is a super-2 number, since 2×430981² = 371489244722, which contains 22 as substring.

Together with 430979, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (430987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215490 + 215491.

It is an arithmetic number, because the mean of its divisors is an integer number (215491).

2⁴³⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

430981 is a deficient number, since it is larger than the sum of its proper divisors (1).

430981 is an equidigital number, since it uses as much as digits as its factorization.

430981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 430981 is about 656.4914317796. The cubic root of 430981 is about 75.5357782562.

The spelling of 430981 in words is "four hundred thirty thousand, nine hundred eighty-one".