222312523 has 4 divisors (see below), whose sum is σ = 223266888. Its totient is φ = 221358160.

The previous prime is 222312479. The next prime is 222312529. The reversal of 222312523 is 325213222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325213222 = 2 ⋅162606611.

It is a cyclic number.

It is not a de Polignac number, because 222312523 - 2⁹ = 222312011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222312494 and 222312503.

It is not an unprimeable number, because it can be changed into a prime (222312529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476833 + ... + 477298.

It is an arithmetic number, because the mean of its divisors is an integer number (55816722).

Almost surely, 2^222312523 is an apocalyptic number.

222312523 is a deficient number, since it is larger than the sum of its proper divisors (954365).

222312523 is an equidigital number, since it uses as much as digits as its factorization.

222312523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954364.

The product of its digits is 1440, while the sum is 22.

The square root of 222312523 is about 14910.1483225352. The cubic root of 222312523 is about 605.7888968684.

Adding to 222312523 its reverse (325213222), we get a palindrome (547525745).

The spelling of 222312523 in words is "two hundred twenty-two million, three hundred twelve thousand, five hundred twenty-three".