1213941383 has 4 divisors (see below), whose sum is σ = 1220103720. Its totient is φ = 1207779048.

The previous prime is 1213941371. The next prime is 1213941437. The reversal of 1213941383 is 3831493121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3831493121 = 271 ⋅14138351.

It is a cyclic number.

It is not a de Polignac number, because 1213941383 - 2⁴ = 1213941367 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 (1213941283) 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, 3080873 + ... + 3081266.

It is an arithmetic number, because the mean of its divisors is an integer number (305025930).

Almost surely, 2^1213941383 is an apocalyptic number.

1213941383 is a deficient number, since it is larger than the sum of its proper divisors (6162337).

1213941383 is an equidigital number, since it uses as much as digits as its factorization.

1213941383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162336.

The product of its digits is 15552, while the sum is 35.

The square root of 1213941383 is about 34841.6615992980. The cubic root of 1213941383 is about 1066.7579928425.

The spelling of 1213941383 in words is "one billion, two hundred thirteen million, nine hundred forty-one thousand, three hundred eighty-three".