312111045 has 24 divisors (see below), whose sum is σ = 544635000. Its totient is φ = 165338496.

The previous prime is 312111029. The next prime is 312111047. The reversal of 312111045 is 540111213.

It can be written as a sum of positive squares in 4 ways, for example, as 50253921 + 261857124 = 7089^2 + 16182^2 .

It is not a de Polignac number, because 312111045 - 2⁴ = 312111029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16570 + ... + 29979.

It is an arithmetic number, because the mean of its divisors is an integer number (22693125).

Almost surely, 2^312111045 is an apocalyptic number.

It is an amenable number.

312111045 is a deficient number, since it is larger than the sum of its proper divisors (232523955).

312111045 is a wasteful number, since it uses less digits than its factorization.

312111045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46709 (or 46706 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 312111045 is about 17666.6647955974. The cubic root of 312111045 is about 678.3227442454.

Adding to 312111045 its reverse (540111213), we get a palindrome (852222258).

The spelling of 312111045 in words is "three hundred twelve million, one hundred eleven thousand, forty-five".