1912343 has 4 divisors (see below), whose sum is σ = 1933920. Its totient is φ = 1890768.

The previous prime is 1912307. The next prime is 1912357. The reversal of 1912343 is 3432191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3432191 = 7 ⋅490313.

It is a cyclic number.

It is not a de Polignac number, because 1912343 - 2⁸ = 1912087 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 (1912373) 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, 10655 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (483480).

2^1912343 is an apocalyptic number.

1912343 is a deficient number, since it is larger than the sum of its proper divisors (21577).

1912343 is an equidigital number, since it uses as much as digits as its factorization.

1912343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21576.

The product of its digits is 648, while the sum is 23.

The square root of 1912343 is about 1382.8749039591. The cubic root of 1912343 is about 124.1238573400.

The spelling of 1912343 in words is "one million, nine hundred twelve thousand, three hundred forty-three".