340404312 has 32 divisors (see below), whose sum is σ = 851914800. Its totient is φ = 113347584.

The previous prime is 340404271. The next prime is 340404341. The reversal of 340404312 is 213404043.

It is a super-3 number, since 3×340404312³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17188 + ... + 31244.

Almost surely, 2^340404312 is an apocalyptic number.

It is an amenable number.

340404312 is an abundant number, since it is smaller than the sum of its proper divisors (511510488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340404312 is a wasteful number, since it uses less digits than its factorization.

340404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15075 (or 15071 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340404312 is about 18450.0491056257. The cubic root of 340404312 is about 698.2297528026.

Adding to 340404312 its reverse (213404043), we get a palindrome (553808355).

The spelling of 340404312 in words is "three hundred forty million, four hundred four thousand, three hundred twelve".