223431431140 has 24 divisors (see below), whose sum is σ = 478058951160. Its totient is φ = 87686297088.

The previous prime is 223431431117. The next prime is 223431431143. The reversal of 223431431140 is 41134134322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5842767844 + 217588663296 = 76438^2 + 466464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 223431431099 and 223431431108.

It is not an unprimeable number, because it can be changed into a prime (223431431143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105391125 + ... + 105393244.

It is an arithmetic number, because the mean of its divisors is an integer number (19919122965).

Almost surely, 2^223431431140 is an apocalyptic number.

223431431140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223431431140 is an abundant number, since it is smaller than the sum of its proper divisors (254627520020).

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

223431431140 is a wasteful number, since it uses less digits than its factorization.

223431431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210784431 (or 210784429 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 223431431140 its reverse (41134134322), we get a palindrome (264565565462).

The spelling of 223431431140 in words is "two hundred twenty-three billion, four hundred thirty-one million, four hundred thirty-one thousand, one hundred forty".