1131212342 has 8 divisors (see below), whose sum is σ = 1827343056. Its totient is φ = 522097992.

The previous prime is 1131212333. The next prime is 1131212347. The reversal of 1131212342 is 2432121311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131212347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21754058 + ... + 21754109.

It is an arithmetic number, because the mean of its divisors is an integer number (228417882).

Almost surely, 2^1131212342 is an apocalyptic number.

1131212342 is a deficient number, since it is larger than the sum of its proper divisors (696130714).

1131212342 is a wasteful number, since it uses less digits than its factorization.

1131212342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43508182.

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

The square root of 1131212342 is about 33633.5002936061. The cubic root of 1131212342 is about 1041.9527973037.

Adding to 1131212342 its reverse (2432121311), we get a palindrome (3563333653).

The spelling of 1131212342 in words is "one billion, one hundred thirty-one million, two hundred twelve thousand, three hundred forty-two".