2012320154 has 8 divisors (see below), whose sum is σ = 3250671060. Its totient is φ = 928763136.

The previous prime is 2012320151. The next prime is 2012320169. The reversal of 2012320154 is 4510232102.

It can be written as a sum of positive squares in 2 ways, for example, as 1461150625 + 551169529 = 38225^2 + 23477^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2012320151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38698439 + ... + 38698490.

Almost surely, 2^2012320154 is an apocalyptic number.

2012320154 is a deficient number, since it is larger than the sum of its proper divisors (1238350906).

2012320154 is a wasteful number, since it uses less digits than its factorization.

2012320154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77396944.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2012320154 is about 44858.8915823831. The cubic root of 2012320154 is about 1262.5028260434.

Adding to 2012320154 its reverse (4510232102), we get a palindrome (6522552256).

The spelling of 2012320154 in words is "two billion, twelve million, three hundred twenty thousand, one hundred fifty-four".