1142112331 has 4 divisors (see below), whose sum is σ = 1145126200. Its totient is φ = 1139098464.

The previous prime is 1142112313. The next prime is 1142112373. The reversal of 1142112331 is 1332112411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142112331 - 2⁷ = 1142112203 is a prime.

It is a super-2 number, since 2×1142112331² = 2608841153244507122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142112299 and 1142112308.

It is not an unprimeable number, because it can be changed into a prime (1142112431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1506366 + ... + 1507123.

It is an arithmetic number, because the mean of its divisors is an integer number (286281550).

Almost surely, 2^1142112331 is an apocalyptic number.

1142112331 is a deficient number, since it is larger than the sum of its proper divisors (3013869).

1142112331 is an equidigital number, since it uses as much as digits as its factorization.

1142112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013868.

The product of its digits is 144, while the sum is 19.

The square root of 1142112331 is about 33795.1524778333. The cubic root of 1142112331 is about 1045.2887432683.

Adding to 1142112331 its reverse (1332112411), we get a palindrome (2474224742).

The spelling of 1142112331 in words is "one billion, one hundred forty-two million, one hundred twelve thousand, three hundred thirty-one".