431021268 has 36 divisors (see below), whose sum is σ = 1091027028. Its totient is φ = 143475840.

The previous prime is 431021263. The next prime is 431021291. The reversal of 431021268 is 862120134.

It can be written as a sum of positive squares in 2 ways, for example, as 15350724 + 415670544 = 3918^2 + 20388^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431021263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19530 + ... + 35262.

Almost surely, 2^431021268 is an apocalyptic number.

It is an amenable number.

431021268 is an abundant number, since it is smaller than the sum of its proper divisors (660005760).

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

431021268 is a wasteful number, since it uses less digits than its factorization.

431021268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504 (or 16499 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 431021268 is about 20761.0517074641. The cubic root of 431021268 is about 755.3813070332.

The spelling of 431021268 in words is "four hundred thirty-one million, twenty-one thousand, two hundred sixty-eight".