1343021023 has 4 divisors (see below), whose sum is σ = 1413706360. Its totient is φ = 1272335688.

The previous prime is 1343021003. The next prime is 1343021033. The reversal of 1343021023 is 3201203431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343021023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 70685317 = 1343021023 / (1 + 3 + 4 + 3 + 0 + 2 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343021003) 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, 35342640 + ... + 35342677.

It is an arithmetic number, because the mean of its divisors is an integer number (353426590).

Almost surely, 2^1343021023 is an apocalyptic number.

1343021023 is a deficient number, since it is larger than the sum of its proper divisors (70685337).

1343021023 is an equidigital number, since it uses as much as digits as its factorization.

1343021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70685336.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1343021023 is about 36647.2512338920. The cubic root of 1343021023 is about 1103.3016567263.

Adding to 1343021023 its reverse (3201203431), we get a palindrome (4544224454).

It can be divided in two parts, 13430 and 21023, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1343021023 in words is "one billion, three hundred forty-three million, twenty-one thousand, twenty-three".