343121031 has 36 divisors (see below), whose sum is σ = 548397304. Its totient is φ = 206569440.

The previous prime is 343121029. The next prime is 343121041. The reversal of 343121031 is 130121343.

It is not a de Polignac number, because 343121031 - 2¹ = 343121029 is a prime.

It is a super-2 number, since 2×343121031² = 235464083829005922, 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 = 343120995 and 343121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343121041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 176541 + ... + 178473.

Almost surely, 2^343121031 is an apocalyptic number.

343121031 is a deficient number, since it is larger than the sum of its proper divisors (205276273).

343121031 is a wasteful number, since it uses less digits than its factorization.

343121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 343121031 is about 18523.5264191244. The cubic root of 343121031 is about 700.0823243314.

Adding to 343121031 its reverse (130121343), we get a palindrome (473242374).

The spelling of 343121031 in words is "three hundred forty-three million, one hundred twenty-one thousand, thirty-one".