312345340 has 12 divisors (see below), whose sum is σ = 655925256. Its totient is φ = 124938128.

The previous prime is 312345331. The next prime is 312345353. The reversal of 312345340 is 43543213.

It is a super-2 number, since 2×312345340² = 195119222839431200, which contains 22 as substring.

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, 7808614 + ... + 7808653.

It is an arithmetic number, because the mean of its divisors is an integer number (54660438).

Almost surely, 2^312345340 is an apocalyptic number.

It is an amenable number.

312345340 is an abundant number, since it is smaller than the sum of its proper divisors (343579916).

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

312345340 is a wasteful number, since it uses less digits than its factorization.

312345340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15617276 (or 15617274 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 312345340 is about 17673.2945428972. The cubic root of 312345340 is about 678.4924358543.

Adding to 312345340 its reverse (43543213), we get a palindrome (355888553).

The spelling of 312345340 in words is "three hundred twelve million, three hundred forty-five thousand, three hundred forty".