431015420 has 24 divisors (see below), whose sum is σ = 987417648. Its totient is φ = 156732800.

The previous prime is 431015419. The next prime is 431015449. The reversal of 431015420 is 24510134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 431015392 and 431015401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979361 + ... + 979800.

It is an arithmetic number, because the mean of its divisors is an integer number (41142402).

Almost surely, 2^431015420 is an apocalyptic number.

It is an amenable number.

431015420 is an abundant number, since it is smaller than the sum of its proper divisors (556402228).

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

431015420 is a wasteful number, since it uses less digits than its factorization.

431015420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959181 (or 1959179 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 431015420 is about 20760.9108663372. The cubic root of 431015420 is about 755.3778907363.

Adding to 431015420 its reverse (24510134), we get a palindrome (455525554).

The spelling of 431015420 in words is "four hundred thirty-one million, fifteen thousand, four hundred twenty".