331312343 has 4 divisors (see below), whose sum is σ = 332377968. Its totient is φ = 330246720.

The previous prime is 331312307. The next prime is 331312351. The reversal of 331312343 is 343213133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343213133 = 251 ⋅1367383.

It is a cyclic number.

It is not a de Polignac number, because 331312343 - 2¹⁴ = 331295959 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 (331312043) 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, 532346 + ... + 532967.

It is an arithmetic number, because the mean of its divisors is an integer number (83094492).

Almost surely, 2^331312343 is an apocalyptic number.

331312343 is a deficient number, since it is larger than the sum of its proper divisors (1065625).

331312343 is a wasteful number, since it uses less digits than its factorization.

331312343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065624.

The product of its digits is 1944, while the sum is 23.

The square root of 331312343 is about 18201.9873365520. The cubic root of 331312343 is about 691.9571563739.

Adding to 331312343 its reverse (343213133), we get a palindrome (674525476).

The spelling of 331312343 in words is "three hundred thirty-one million, three hundred twelve thousand, three hundred forty-three".