340531331 has 12 divisors (see below), whose sum is σ = 396918360. Its totient is φ = 291301920.

The previous prime is 340531327. The next prime is 340531333. The reversal of 340531331 is 133135043.

It is a happy number.

It is not a de Polignac number, because 340531331 - 2² = 340531327 is a prime.

It is a super-2 number, since 2×340531331² = 231923174785263122, 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 = 340531297 and 340531306.

It is not an unprimeable number, because it can be changed into a prime (340531333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18860 + ... + 32198.

It is an arithmetic number, because the mean of its divisors is an integer number (33076530).

Almost surely, 2^340531331 is an apocalyptic number.

340531331 is a deficient number, since it is larger than the sum of its proper divisors (56387029).

340531331 is a wasteful number, since it uses less digits than its factorization.

340531331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13874 (or 13867 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 340531331 is about 18453.4910247357. The cubic root of 340531331 is about 698.3165881853.

Adding to 340531331 its reverse (133135043), we get a palindrome (473666374).

The spelling of 340531331 in words is "three hundred forty million, five hundred thirty-one thousand, three hundred thirty-one".