343131231 has 8 divisors (see below), whose sum is σ = 457765504. Its totient is φ = 228625560.

The previous prime is 343131211. The next prime is 343131233. The reversal of 343131231 is 132131343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343131231 - 2²³ = 334742623 is a prime.

It is a super-2 number, since 2×343131231² = 235478083375150722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343131198 and 343131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343131233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25741 + ... + 36726.

It is an arithmetic number, because the mean of its divisors is an integer number (57220688).

Almost surely, 2^343131231 is an apocalyptic number.

343131231 is a deficient number, since it is larger than the sum of its proper divisors (114634273).

343131231 is a wasteful number, since it uses less digits than its factorization.

343131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64301.

The product of its digits is 648, while the sum is 21.

The square root of 343131231 is about 18523.8017426229. The cubic root of 343131231 is about 700.0892614063.

Adding to 343131231 its reverse (132131343), we get a palindrome (475262574).

It can be divided in two parts, 3431312 and 31, that added together give a palindrome (3431343).

The spelling of 343131231 in words is "three hundred forty-three million, one hundred thirty-one thousand, two hundred thirty-one".