2001312162 has 24 divisors (see below), whose sum is σ = 4355629824. Its totient is φ = 664111224.

The previous prime is 2001312143. The next prime is 2001312163. The reversal of 2001312162 is 2612131002.

It is a super-2 number, since 2×2001312162² = 8010500739538228488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2001312163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245278 + ... + 253305.

It is an arithmetic number, because the mean of its divisors is an integer number (181484576).

Almost surely, 2^2001312162 is an apocalyptic number.

2001312162 is an abundant number, since it is smaller than the sum of its proper divisors (2354317662).

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

2001312162 is a wasteful number, since it uses less digits than its factorization.

2001312162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498814 (or 498811 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2001312162 is about 44736.0275616868. The cubic root of 2001312162 is about 1260.1965264128.

Adding to 2001312162 its reverse (2612131002), we get a palindrome (4613443164).

The spelling of 2001312162 in words is "two billion, one million, three hundred twelve thousand, one hundred sixty-two".