1213331152 has 40 divisors (see below), whose sum is σ = 2579959872. Its totient is φ = 548198400.

The previous prime is 1213331137. The next prime is 1213331159. The reversal of 1213331152 is 2511333121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213331159) 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, 8752 + ... + 50032.

Almost surely, 2^1213331152 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 1213331152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289979936).

1213331152 is an abundant number, since it is smaller than the sum of its proper divisors (1366628720).

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

1213331152 is a wasteful number, since it uses less digits than its factorization.

1213331152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41467 (or 41461 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 1213331152 is about 34832.9032955911. The cubic root of 1213331152 is about 1066.5792148790.

Adding to 1213331152 its reverse (2511333121), we get a palindrome (3724664273).

The spelling of 1213331152 in words is "one billion, two hundred thirteen million, three hundred thirty-one thousand, one hundred fifty-two".