1223244481 has 4 divisors (see below), whose sum is σ = 1224545364. Its totient is φ = 1221943600.

The previous prime is 1223244479. The next prime is 1223244493. The reversal of 1223244481 is 1844423221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1844423221 = 193 ⋅9556597.

It can be written as a sum of positive squares in 2 ways, for example, as 576000000 + 647244481 = 24000^2 + 25441^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223244481 - 2¹ = 1223244479 is a prime.

It is a super-2 number, since 2×1223244481² = 2992654120593918722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223244461) 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, 649030 + ... + 650911.

It is an arithmetic number, because the mean of its divisors is an integer number (306136341).

Almost surely, 2^1223244481 is an apocalyptic number.

It is an amenable number.

1223244481 is a deficient number, since it is larger than the sum of its proper divisors (1300883).

1223244481 is an equidigital number, since it uses as much as digits as its factorization.

1223244481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300882.

The product of its digits is 12288, while the sum is 31.

The square root of 1223244481 is about 34974.9121657224. The cubic root of 1223244481 is about 1069.4761114886.

The spelling of 1223244481 in words is "one billion, two hundred twenty-three million, two hundred forty-four thousand, four hundred eighty-one".