1345838023 has 4 divisors (see below), whose sum is σ = 1357748208. Its totient is φ = 1333927840.

The previous prime is 1345837993. The next prime is 1345838071. The reversal of 1345838023 is 3208385431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3208385431 = 5881 ⋅545551.

It is a cyclic number.

It is not a de Polignac number, because 1345838023 - 2⁹ = 1345837511 is a prime.

It is a super-2 number, since 2×1345838023² = 3622559968305097058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345838083) 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, 5954923 + ... + 5955148.

It is an arithmetic number, because the mean of its divisors is an integer number (339437052).

Almost surely, 2^1345838023 is an apocalyptic number.

1345838023 is a deficient number, since it is larger than the sum of its proper divisors (11910185).

1345838023 is a wasteful number, since it uses less digits than its factorization.

1345838023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910184.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1345838023 is about 36685.6650886964. The cubic root of 1345838023 is about 1104.0725134296.

The spelling of 1345838023 in words is "one billion, three hundred forty-five million, eight hundred thirty-eight thousand, twenty-three".