431420430 has 128 divisors (see below), whose sum is σ = 1244160000. Its totient is φ = 93608064.

The previous prime is 431420399. The next prime is 431420461. The reversal of 431420430 is 34024134.

It is an interprime number because it is at equal distance from previous prime (431420399) and next prime (431420461).

It is a super-2 number, since 2×431420430² = 372247174842769800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 431420397 and 431420406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 864321 + ... + 864819.

It is an arithmetic number, because the mean of its divisors is an integer number (9720000).

Almost surely, 2^431420430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431420430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622080000).

431420430 is an abundant number, since it is smaller than the sum of its proper divisors (812739570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431420430 is a wasteful number, since it uses less digits than its factorization.

431420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 431420430 is about 20770.6627241405. The cubic root of 431420430 is about 755.6144173273.

Adding to 431420430 its reverse (34024134), we get a palindrome (465444564).

The spelling of 431420430 in words is "four hundred thirty-one million, four hundred twenty thousand, four hundred thirty".