431436020 has 12 divisors (see below), whose sum is σ = 906015684. Its totient is φ = 172574400.

The previous prime is 431436017. The next prime is 431436023. The reversal of 431436020 is 20634134.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (431436017) and next prime (431436023).

It can be written as a sum of positive squares in 2 ways, for example, as 279357796 + 152078224 = 16714^2 + 12332^2 .

It is a super-2 number, since 2×431436020² = 372274078706880800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431436023) 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, 10785881 + ... + 10785920.

It is an arithmetic number, because the mean of its divisors is an integer number (75501307).

Almost surely, 2^431436020 is an apocalyptic number.

It is an amenable number.

431436020 is an abundant number, since it is smaller than the sum of its proper divisors (474579664).

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

431436020 is a wasteful number, since it uses less digits than its factorization.

431436020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21571810 (or 21571808 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 431436020 is about 20771.0380096903. The cubic root of 431436020 is about 755.6235189569.

The spelling of 431436020 in words is "four hundred thirty-one million, four hundred thirty-six thousand, twenty".