223542131 has 2 divisors, whose sum is σ = 223542132. Its totient is φ = 223542130.

The previous prime is 223542119. The next prime is 223542161. The reversal of 223542131 is 131245322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223542131 - 2²⁶ = 156433267 is a prime.

It is a super-2 number, since 2×223542131² = 99942168664042322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223542097 and 223542106.

It is not a weakly prime, because it can be changed into another prime (223542161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111771065 + 111771066.

It is an arithmetic number, because the mean of its divisors is an integer number (111771066).

Almost surely, 2^223542131 is an apocalyptic number.

223542131 is a deficient number, since it is larger than the sum of its proper divisors (1).

223542131 is an equidigital number, since it uses as much as digits as its factorization.

223542131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 223542131 is about 14951.3253927536. The cubic root of 223542131 is about 606.9037145065.

Adding to 223542131 its reverse (131245322), we get a palindrome (354787453).

The spelling of 223542131 in words is "two hundred twenty-three million, five hundred forty-two thousand, one hundred thirty-one".