1223023412 has 12 divisors (see below), whose sum is σ = 2304928836. Its totient is φ = 564472320.

The previous prime is 1223023397. The next prime is 1223023421. The reversal of 1223023412 is 2143203221.

It can be written as a sum of positive squares in 2 ways, for example, as 337603876 + 885419536 = 18374^2 + 29756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11759789 + ... + 11759892.

It is an arithmetic number, because the mean of its divisors is an integer number (192077403).

Almost surely, 2^1223023412 is an apocalyptic number.

It is an amenable number.

1223023412 is a deficient number, since it is larger than the sum of its proper divisors (1081905424).

1223023412 is a wasteful number, since it uses less digits than its factorization.

1223023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23519698 (or 23519696 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223023412 is about 34971.7516289934. The cubic root of 1223023412 is about 1069.4116811254.

Adding to 1223023412 its reverse (2143203221), we get a palindrome (3366226633).

The spelling of 1223023412 in words is "one billion, two hundred twenty-three million, twenty-three thousand, four hundred twelve".