1131342212 has 96 divisors (see below), whose sum is σ = 2720492544. Its totient is φ = 397353600.

The previous prime is 1131342209. The next prime is 1131342257. The reversal of 1131342212 is 2122431311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168887 + ... + 175457.

It is an arithmetic number, because the mean of its divisors is an integer number (28338464).

Almost surely, 2^1131342212 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 1131342212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360246272).

1131342212 is an abundant number, since it is smaller than the sum of its proper divisors (1589150332).

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

1131342212 is a wasteful number, since it uses less digits than its factorization.

1131342212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649 (or 6647 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1131342212 is about 33635.4309025468. The cubic root of 1131342212 is about 1041.9926699332.

Adding to 1131342212 its reverse (2122431311), we get a palindrome (3253773523).

It can be divided in two parts, 1131 and 342212, that added together give a palindrome (343343).

The spelling of 1131342212 in words is "one billion, one hundred thirty-one million, three hundred forty-two thousand, two hundred twelve".