1201323023 has 4 divisors (see below), whose sum is σ = 1208974920. Its totient is φ = 1193671128.

The previous prime is 1201323007. The next prime is 1201323029. The reversal of 1201323023 is 3203231021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3203231021 = 73 ⋅43879877.

It is a cyclic number.

It is not a de Polignac number, because 1201323023 - 2⁴ = 1201323007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201322992 and 1201323010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201323029) 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 in 3 ways as a sum of consecutive naturals, for example, 3825713 + ... + 3826026.

It is an arithmetic number, because the mean of its divisors is an integer number (302243730).

Almost surely, 2^1201323023 is an apocalyptic number.

1201323023 is a deficient number, since it is larger than the sum of its proper divisors (7651897).

1201323023 is an equidigital number, since it uses as much as digits as its factorization.

1201323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651896.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1201323023 is about 34660.1070829275. The cubic root of 1201323023 is about 1063.0489595602.

Adding to 1201323023 its reverse (3203231021), we get a palindrome (4404554044).

The spelling of 1201323023 in words is "one billion, two hundred one million, three hundred twenty-three thousand, twenty-three".