312188042 has 16 divisors (see below), whose sum is σ = 483992064. Its totient is φ = 150870000.

The previous prime is 312188033. The next prime is 312188047. The reversal of 312188042 is 240881213.

312188042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×312188042² = 194922747135587528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312187996 and 312188014.

It is not an unprimeable number, because it can be changed into a prime (312188047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55667 + ... + 61017.

It is an arithmetic number, because the mean of its divisors is an integer number (30249504).

Almost surely, 2^312188042 is an apocalyptic number.

312188042 is a deficient number, since it is larger than the sum of its proper divisors (171804022).

312188042 is a wasteful number, since it uses less digits than its factorization.

312188042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 312188042 is about 17668.8438218238. The cubic root of 312188042 is about 678.3785198236.

The spelling of 312188042 in words is "three hundred twelve million, one hundred eighty-eight thousand, forty-two".