223342431021 has 12 divisors (see below), whose sum is σ = 323418347772. Its totient is φ = 148519901376.

The previous prime is 223342430963. The next prime is 223342431041. The reversal of 223342431021 is 120134243322.

223342431021 is a `hidden beast` number, since 2 + 2 + 3 + 342 + 4 + 310 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 173671394121 + 49671036900 = 416739^2 + 222870^2 .

It is not a de Polignac number, because 223342431021 - 2⁷ = 223342430893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223342431041) 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, 31250616 + ... + 31257761.

It is an arithmetic number, because the mean of its divisors is an integer number (26951528981).

Almost surely, 2^223342431021 is an apocalyptic number.

It is an amenable number.

223342431021 is a deficient number, since it is larger than the sum of its proper divisors (100075916751).

223342431021 is a wasteful number, since it uses less digits than its factorization.

223342431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62508780 (or 62508777 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 223342431021 its reverse (120134243322), we get a palindrome (343476674343).

The spelling of 223342431021 in words is "two hundred twenty-three billion, three hundred forty-two million, four hundred thirty-one thousand, twenty-one".