1209332623 has 4 divisors (see below), whose sum is σ = 1222920720. Its totient is φ = 1195744528.

The previous prime is 1209332603. The next prime is 1209332627. The reversal of 1209332623 is 3262339021.

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 1209332623 - 2²⁹ = 672461711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209332627) 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, 6793915 + ... + 6794092.

It is an arithmetic number, because the mean of its divisors is an integer number (305730180).

Almost surely, 2^1209332623 is an apocalyptic number.

1209332623 is a deficient number, since it is larger than the sum of its proper divisors (13588097).

1209332623 is an equidigital number, since it uses as much as digits as its factorization.

1209332623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13588096.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1209332623 is about 34775.4600688474. The cubic root of 1209332623 is about 1065.4062893256.

The spelling of 1209332623 in words is "one billion, two hundred nine million, three hundred thirty-two thousand, six hundred twenty-three".