1321012323 has 6 divisors (see below), whose sum is σ = 1908128924. Its totient is φ = 880674876.

The previous prime is 1321012283. The next prime is 1321012349. The reversal of 1321012323 is 3232101231.

It is not a de Polignac number, because 1321012323 - 2⁸ = 1321012067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321012296 and 1321012305.

It is not an unprimeable number, because it can be changed into a prime (1321012123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73389565 + ... + 73389582.

Almost surely, 2^1321012323 is an apocalyptic number.

1321012323 is a deficient number, since it is larger than the sum of its proper divisors (587116601).

1321012323 is a wasteful number, since it uses less digits than its factorization.

1321012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146779153 (or 146779150 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1321012323 is about 36345.7332158811. The cubic root of 1321012323 is about 1097.2416628618.

Adding to 1321012323 its reverse (3232101231), we get a palindrome (4553113554).

The spelling of 1321012323 in words is "one billion, three hundred twenty-one million, twelve thousand, three hundred twenty-three".