431361620 has 12 divisors (see below), whose sum is σ = 905859444. Its totient is φ = 172544640.

The previous prime is 431361589. The next prime is 431361643. The reversal of 431361620 is 26163134.

It can be written as a sum of positive squares in 2 ways, for example, as 283787716 + 147573904 = 16846^2 + 12148^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 431361620.

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, 10784021 + ... + 10784060.

It is an arithmetic number, because the mean of its divisors is an integer number (75488287).

Almost surely, 2^431361620 is an apocalyptic number.

It is an amenable number.

431361620 is an abundant number, since it is smaller than the sum of its proper divisors (474497824).

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

431361620 is a wasteful number, since it uses less digits than its factorization.

431361620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21568090 (or 21568088 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 431361620 is about 20769.2469772017. The cubic root of 431361620 is about 755.5800813678.

The spelling of 431361620 in words is "four hundred thirty-one million, three hundred sixty-one thousand, six hundred twenty".