2015051312 has 40 divisors (see below), whose sum is σ = 4049331600. Its totient is φ = 970244352.

The previous prime is 2015051287. The next prime is 2015051317. The reversal of 2015051312 is 2131505102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2015051317) 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, 178739 + ... + 189677.

It is an arithmetic number, because the mean of its divisors is an integer number (101233290).

Almost surely, 2^2015051312 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 2015051312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024665800).

2015051312 is an abundant number, since it is smaller than the sum of its proper divisors (2034280288).

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

2015051312 is a wasteful number, since it uses less digits than its factorization.

2015051312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11373 (or 11367 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2015051312 is about 44889.3229175937. The cubic root of 2015051312 is about 1263.0737318744.

Adding to 2015051312 its reverse (2131505102), we get a palindrome (4146556414).

The spelling of 2015051312 in words is "two billion, fifteen million, fifty-one thousand, three hundred twelve".