312012445 has 8 divisors (see below), whose sum is σ = 374930136. Its totient is φ = 249266496.

The previous prime is 312012413. The next prime is 312012469. The reversal of 312012445 is 544210213.

It can be written as a sum of positive squares in 4 ways, for example, as 56715961 + 255296484 = 7531^2 + 15978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312012445 - 2⁵ = 312012413 is a prime.

It is a Duffinian number.

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, 38902 + ... + 46231.

It is an arithmetic number, because the mean of its divisors is an integer number (46866267).

Almost surely, 2^312012445 is an apocalyptic number.

It is an amenable number.

312012445 is a deficient number, since it is larger than the sum of its proper divisors (62917691).

312012445 is an equidigital number, since it uses as much as digits as its factorization.

312012445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85871.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 312012445 is about 17663.8740088351. The cubic root of 312012445 is about 678.2513063518.

Adding to 312012445 its reverse (544210213), we get a palindrome (856222658).

The spelling of 312012445 in words is "three hundred twelve million, twelve thousand, four hundred forty-five".