312697340 has 12 divisors (see below), whose sum is σ = 656664456. Its totient is φ = 125078928.

The previous prime is 312697291. The next prime is 312697373. The reversal of 312697340 is 43796213.

It is a self number, because there is not a number n which added to its sum of digits gives 312697340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7817414 + ... + 7817453.

It is an arithmetic number, because the mean of its divisors is an integer number (54722038).

Almost surely, 2^312697340 is an apocalyptic number.

It is an amenable number.

312697340 is an abundant number, since it is smaller than the sum of its proper divisors (343967116).

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

312697340 is a wasteful number, since it uses less digits than its factorization.

312697340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15634876 (or 15634874 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 312697340 is about 17683.2502668486. The cubic root of 312697340 is about 678.7472176039.

The spelling of 312697340 in words is "three hundred twelve million, six hundred ninety-seven thousand, three hundred forty".