1223267531 has 8 divisors (see below), whose sum is σ = 1279670400. Its totient is φ = 1167812800.

The previous prime is 1223267509. The next prime is 1223267537. The reversal of 1223267531 is 1357623221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223267531 - 2²⁶ = 1156158667 is a prime.

It is a super-2 number, since 2×1223267531² = 2992766904797671922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223267537) 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, 234395 + ... + 239556.

It is an arithmetic number, because the mean of its divisors is an integer number (159958800).

Almost surely, 2^1223267531 is an apocalyptic number.

1223267531 is a deficient number, since it is larger than the sum of its proper divisors (56402869).

1223267531 is an equidigital number, since it uses as much as digits as its factorization.

1223267531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474069.

The product of its digits is 15120, while the sum is 32.

The square root of 1223267531 is about 34975.2416860842. The cubic root of 1223267531 is about 1069.4828289437.

The spelling of 1223267531 in words is "one billion, two hundred twenty-three million, two hundred sixty-seven thousand, five hundred thirty-one".