2012178331 has 2 divisors, whose sum is σ = 2012178332. Its totient is φ = 2012178330.

The previous prime is 2012178319. The next prime is 2012178347. The reversal of 2012178331 is 1338712102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012178331 - 2²¹ = 2010081179 is a prime.

It is a super-2 number, since 2×2012178331² = 8097723271491891122, 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 2012178331.

It is not a weakly prime, because it can be changed into another prime (2012178131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006089165 + 1006089166.

It is an arithmetic number, because the mean of its divisors is an integer number (1006089166).

Almost surely, 2^2012178331 is an apocalyptic number.

2012178331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012178331 is an equidigital number, since it uses as much as digits as its factorization.

2012178331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2012178331 is about 44857.3107865373. The cubic root of 2012178331 is about 1262.4731660604.

The spelling of 2012178331 in words is "two billion, twelve million, one hundred seventy-eight thousand, three hundred thirty-one".