431044420 has 12 divisors (see below), whose sum is σ = 905193324. Its totient is φ = 172417760.

The previous prime is 431044363. The next prime is 431044423. The reversal of 431044420 is 24440134.

It can be written as a sum of positive squares in 2 ways, for example, as 241926916 + 189117504 = 15554^2 + 13752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 431044391 and 431044400.

It is not an unprimeable number, because it can be changed into a prime (431044423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10776091 + ... + 10776130.

It is an arithmetic number, because the mean of its divisors is an integer number (75432777).

Almost surely, 2^431044420 is an apocalyptic number.

It is an amenable number.

431044420 is an abundant number, since it is smaller than the sum of its proper divisors (474148904).

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

431044420 is a wasteful number, since it uses less digits than its factorization.

431044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21552230 (or 21552228 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 431044420 is about 20761.6092825195. The cubic root of 431044420 is about 755.3948317137.

Adding to 431044420 its reverse (24440134), we get a palindrome (455484554).

It can be divided in two parts, 43104 and 4420, that added together give a square (47524 = 218²).

The spelling of 431044420 in words is "four hundred thirty-one million, forty-four thousand, four hundred twenty".