2001402312 has 128 divisors (see below), whose sum is σ = 6204038400. Its totient is φ = 523911168.

The previous prime is 2001402311. The next prime is 2001402407. The reversal of 2001402312 is 2132041002.

It is a super-2 number, since 2×2001402312² = 8011222428957890688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001402291 and 2001402300.

It is not an unprimeable number, because it can be changed into a prime (2001402311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295864 + ... + 302552.

It is an arithmetic number, because the mean of its divisors is an integer number (48469050).

Almost surely, 2^2001402312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001402312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3102019200).

2001402312 is an abundant number, since it is smaller than the sum of its proper divisors (4202636088).

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

2001402312 is a wasteful number, since it uses less digits than its factorization.

2001402312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855 (or 6851 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2001402312 is about 44737.0351275093. The cubic root of 2001402312 is about 1260.2154481671.

Adding to 2001402312 its reverse (2132041002), we get a palindrome (4133443314).

The spelling of 2001402312 in words is "two billion, one million, four hundred two thousand, three hundred twelve".