340312340 has 24 divisors (see below), whose sum is σ = 718405632. Its totient is φ = 135410720.

The previous prime is 340312337. The next prime is 340312381. The reversal of 340312340 is 43213043.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 40724 + ... + 48363.

It is an arithmetic number, because the mean of its divisors is an integer number (29933568).

Almost surely, 2^340312340 is an apocalyptic number.

It is an amenable number.

340312340 is an abundant number, since it is smaller than the sum of its proper divisors (378093292).

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

340312340 is a wasteful number, since it uses less digits than its factorization.

340312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89287 (or 89285 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 340312340 is about 18447.5564777561. The cubic root of 340312340 is about 698.1668634981.

Adding to 340312340 its reverse (43213043), we get a palindrome (383525383).

The spelling of 340312340 in words is "three hundred forty million, three hundred twelve thousand, three hundred forty".