431433020 has 12 divisors (see below), whose sum is σ = 906009384. Its totient is φ = 172573200.

The previous prime is 431433007. The next prime is 431433049. The reversal of 431433020 is 20334134.

It is a super-2 number, since 2×431433020² = 372268901492640800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21571651 = 431433020 / (4 + 3 + 1 + 4 + 3 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 431432983 and 431433001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10785806 + ... + 10785845.

It is an arithmetic number, because the mean of its divisors is an integer number (75500782).

Almost surely, 2^431433020 is an apocalyptic number.

It is an amenable number.

431433020 is an abundant number, since it is smaller than the sum of its proper divisors (474576364).

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

431433020 is a wasteful number, since it uses less digits than its factorization.

431433020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21571660 (or 21571658 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 431433020 is about 20770.9657936264. The cubic root of 431433020 is about 755.6217675378.

Adding to 431433020 its reverse (20334134), we get a palindrome (451767154).

The spelling of 431433020 in words is "four hundred thirty-one million, four hundred thirty-three thousand, twenty".