343440031 has 8 divisors (see below), whose sum is σ = 384788304. Its totient is φ = 303779520.

The previous prime is 343440023. The next prime is 343440047. The reversal of 343440031 is 130044343.

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

It is not a de Polignac number, because 343440031 - 2³ = 343440023 is a prime.

It is a super-2 number, since 2×343440031² = 235902109786561922, 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 = 343439984 and 343440011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343440091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421510 + ... + 422323.

It is an arithmetic number, because the mean of its divisors is an integer number (48098538).

Almost surely, 2^343440031 is an apocalyptic number.

343440031 is a deficient number, since it is larger than the sum of its proper divisors (41348273).

343440031 is a wasteful number, since it uses less digits than its factorization.

343440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843881.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 343440031 is about 18532.1350901616. The cubic root of 343440031 is about 700.2992129004.

Adding to 343440031 its reverse (130044343), we get a palindrome (473484374).

The spelling of 343440031 in words is "three hundred forty-three million, four hundred forty thousand, thirty-one".