1215331050 has 48 divisors (see below), whose sum is σ = 3034037952. Its totient is φ = 321936000.

The previous prime is 1215330997. The next prime is 1215331057. The reversal of 1215331050 is 501335121.

It is a super-2 number, since 2×1215331050² = 2954059122188205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1215331057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4179 + ... + 49478.

It is an arithmetic number, because the mean of its divisors is an integer number (63209124).

Almost surely, 2^1215331050 is an apocalyptic number.

1215331050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215331050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517018976).

1215331050 is an abundant number, since it is smaller than the sum of its proper divisors (1818706902).

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

1215331050 is a wasteful number, since it uses less digits than its factorization.

1215331050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53823 (or 53818 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1215331050 is about 34861.5985003557. The cubic root of 1215331050 is about 1067.1648969108.

Adding to 1215331050 its reverse (501335121), we get a palindrome (1716666171).

The spelling of 1215331050 in words is "one billion, two hundred fifteen million, three hundred thirty-one thousand, fifty".