312111042 has 32 divisors (see below), whose sum is σ = 634411008. Its totient is φ = 102349776.

The previous prime is 312111029. The next prime is 312111047. The reversal of 312111042 is 240111213.

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 15 ways as a sum of consecutive naturals, for example, 129783 + ... + 132165.

It is an arithmetic number, because the mean of its divisors is an integer number (19825344).

Almost surely, 2^312111042 is an apocalyptic number.

312111042 is an abundant number, since it is smaller than the sum of its proper divisors (322299966).

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

312111042 is a wasteful number, since it uses less digits than its factorization.

312111042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 312111042 is about 17666.6647106917. The cubic root of 312111042 is about 678.3227420721.

Adding to 312111042 its reverse (240111213), we get a palindrome (552222255).

The spelling of 312111042 in words is "three hundred twelve million, one hundred eleven thousand, forty-two".