430801981 has 8 divisors (see below), whose sum is σ = 462393144. Its totient is φ = 399905280.

The previous prime is 430801979. The next prime is 430801997. The reversal of 430801981 is 189108034.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27394756 + 403407225 = 5234^2 + 20085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 430801981 - 2¹ = 430801979 is a prime.

It is a super-2 number, since 2×430801981² = 371180693667048722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430801951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172330 + ... + 174811.

It is an arithmetic number, because the mean of its divisors is an integer number (57799143).

Almost surely, 2^430801981 is an apocalyptic number.

It is an amenable number.

430801981 is a deficient number, since it is larger than the sum of its proper divisors (31591163).

430801981 is a wasteful number, since it uses less digits than its factorization.

430801981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347231.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 430801981 is about 20755.7698243163. The cubic root of 430801981 is about 755.2531823425.

The spelling of 430801981 in words is "four hundred thirty million, eight hundred one thousand, nine hundred eighty-one".