431200140423220 has 60 divisors (see below), whose sum is σ = 1056377486991204. Its totient is φ = 147840048128640.

The previous prime is 431200140423191. The next prime is 431200140423223. The reversal of 431200140423220 is 22324041002134.

It can be written as a sum of positive squares in 2 ways, for example, as 222349432440996 + 208850707982224 = 14911386^2 + 14451668^2 .

It is a super-2 number, since 2×431200140423220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431200140423223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4489749361 + ... + 4489845400.

Almost surely, 2^{431200140423220} is an apocalyptic number.

It is an amenable number.

431200140423220 is an abundant number, since it is smaller than the sum of its proper divisors (625177346567984).

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

431200140423220 is an equidigital number, since it uses as much as digits as its factorization.

431200140423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979594798 (or 8979594775 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 431200140423220 its reverse (22324041002134), we get a palindrome (453524181425354).

The spelling of 431200140423220 in words is "four hundred thirty-one trillion, two hundred billion, one hundred forty million, four hundred twenty-three thousand, two hundred twenty".