312445105 has 16 divisors (see below), whose sum is σ = 428929920. Its totient is φ = 214031232.

The previous prime is 312445099. The next prime is 312445109. The reversal of 312445105 is 501544213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 312445105 - 2³ = 312445097 is a prime.

It is a super-2 number, since 2×312445105² = 195243887276922050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312445105.

It is not an unprimeable number, because it can be changed into a prime (312445109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35562 + ... + 43468.

It is an arithmetic number, because the mean of its divisors is an integer number (26808120).

Almost surely, 2^312445105 is an apocalyptic number.

312445105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312445105 is a deficient number, since it is larger than the sum of its proper divisors (116484815).

312445105 is a wasteful number, since it uses less digits than its factorization.

312445105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 312445105 is about 17676.1167964007. The cubic root of 312445105 is about 678.5646663671.

Adding to 312445105 its reverse (501544213), we get a palindrome (813989318).

The spelling of 312445105 in words is "three hundred twelve million, four hundred forty-five thousand, one hundred five".