343931 has 6 divisors (see below), whose sum is σ = 400140. Its totient is φ = 294756.

The previous prime is 343913. The next prime is 343933. The reversal of 343931 is 139343.

It is a de Polignac number, because none of the positive numbers 2^k-343931 is a prime.

It is a super-2 number, since 2×343931² = 236577065522, 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 = 343897 and 343906.

It is not an unprimeable number, because it can be changed into a prime (343933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3461 + ... + 3558.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

2³⁴³⁹³¹ is an apocalyptic number.

343931 is a deficient number, since it is larger than the sum of its proper divisors (56209).

343931 is an equidigital number, since it uses as much as digits as its factorization.

343931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033 (or 7026 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

The square root of 343931 is about 586.4563069829. The cubic root of 343931 is about 70.0632761180.

It can be divided in two parts, 3 and 43931, that added together give a palindrome (43934).

The spelling of 343931 in words is "three hundred forty-three thousand, nine hundred thirty-one".