1223372506 has 4 divisors (see below), whose sum is σ = 1835058762. Its totient is φ = 611686252.

The previous prime is 1223372503. The next prime is 1223372519. The reversal of 1223372506 is 6052733221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6052733221 = 227 ⋅26664023.

It can be written as a sum of positive squares in only one way, i.e., 1078531281 + 144841225 = 32841^2 + 12035^2 .

It is not an unprimeable number, because it can be changed into a prime (1223372503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305843125 + ... + 305843128.

Almost surely, 2^1223372506 is an apocalyptic number.

1223372506 is a deficient number, since it is larger than the sum of its proper divisors (611686256).

1223372506 is an equidigital number, since it uses as much as digits as its factorization.

1223372506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611686255.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 1223372506 is about 34976.7423583158. The cubic root of 1223372506 is about 1069.5134207114.

The spelling of 1223372506 in words is "one billion, two hundred twenty-three million, three hundred seventy-two thousand, five hundred six".