1213120023 has 8 divisors (see below), whose sum is σ = 1641635328. Its totient is φ = 796675704.

The previous prime is 1213119991. The next prime is 1213120039. The reversal of 1213120023 is 3200213121.

1213120023 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213120023 - 2⁵ = 1213119991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213119984 and 1213120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213120043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3017511 + ... + 3017912.

It is an arithmetic number, because the mean of its divisors is an integer number (205204416).

Almost surely, 2^1213120023 is an apocalyptic number.

1213120023 is a deficient number, since it is larger than the sum of its proper divisors (428515305).

1213120023 is an equidigital number, since it uses as much as digits as its factorization.

1213120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035493.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1213120023 is about 34829.8725665197. The cubic root of 1213120023 is about 1066.5173469475.

Adding to 1213120023 its reverse (3200213121), we get a palindrome (4413333144).

The spelling of 1213120023 in words is "one billion, two hundred thirteen million, one hundred twenty thousand, twenty-three".