1223254531 has 4 divisors (see below), whose sum is σ = 1235366064. Its totient is φ = 1211143000.

The previous prime is 1223254519. The next prime is 1223254547. The reversal of 1223254531 is 1354523221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223254531 - 2²⁷ = 1089036803 is a prime.

It is a super-2 number, since 2×1223254531² = 2992703295224059922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223254531.

It is not an unprimeable number, because it can be changed into a prime (1223254031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6055615 + ... + 6055816.

It is an arithmetic number, because the mean of its divisors is an integer number (308841516).

Almost surely, 2^1223254531 is an apocalyptic number.

1223254531 is a deficient number, since it is larger than the sum of its proper divisors (12111533).

1223254531 is a wasteful number, since it uses less digits than its factorization.

1223254531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12111532.

The product of its digits is 7200, while the sum is 28.

The square root of 1223254531 is about 34975.0558398411. The cubic root of 1223254531 is about 1069.4790403677.

Adding to 1223254531 its reverse (1354523221), we get a palindrome (2577777752).

The spelling of 1223254531 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred thirty-one".