1142212331 has 8 divisors (see below), whose sum is σ = 1230648720. Its totient is φ = 1053857952.

The previous prime is 1142212321. The next prime is 1142212339. The reversal of 1142212331 is 1332122411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142212331 - 2¹⁰ = 1142211307 is a prime.

It is a super-2 number, since 2×1142212331² = 2609298018176907122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142212339) 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, 10136 + ... + 48858.

It is an arithmetic number, because the mean of its divisors is an integer number (153831090).

Almost surely, 2^1142212331 is an apocalyptic number.

1142212331 is a deficient number, since it is larger than the sum of its proper divisors (88436389).

1142212331 is a wasteful number, since it uses less digits than its factorization.

1142212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41005.

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

The square root of 1142212331 is about 33796.6319475773. The cubic root of 1142212331 is about 1045.3192498483.

Adding to 1142212331 its reverse (1332122411), we get a palindrome (2474334742).

The spelling of 1142212331 in words is "one billion, one hundred forty-two million, two hundred twelve thousand, three hundred thirty-one".