430350021 has 6 divisors (see below), whose sum is σ = 621616710. Its totient is φ = 286900008.

The previous prime is 430349947. The next prime is 430350043. The reversal of 430350021 is 120053034.

It can be written as a sum of positive squares in only one way, i.e., 427248900 + 3101121 = 20670^2 + 1761^2 .

It is not a de Polignac number, because 430350021 - 2²⁶ = 363241157 is a prime.

It is a super-2 number, since 2×430350021² = 370402281149400882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 430349976 and 430350003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430350061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23908326 + ... + 23908343.

It is an arithmetic number, because the mean of its divisors is an integer number (103602785).

Almost surely, 2^430350021 is an apocalyptic number.

It is an amenable number.

430350021 is a deficient number, since it is larger than the sum of its proper divisors (191266689).

430350021 is a wasteful number, since it uses less digits than its factorization.

430350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47816675 (or 47816672 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 430350021 is about 20744.8793922741. The cubic root of 430350021 is about 754.9889745916.

The spelling of 430350021 in words is "four hundred thirty million, three hundred fifty thousand, twenty-one".