1142113311 has 8 divisors (see below), whose sum is σ = 1692019760. Its totient is φ = 761408856.

The previous prime is 1142113307. The next prime is 1142113321. The reversal of 1142113311 is 1133112411.

It is a happy number.

It is not a de Polignac number, because 1142113311 - 2² = 1142113307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142113321) 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, 21150220 + ... + 21150273.

It is an arithmetic number, because the mean of its divisors is an integer number (211502470).

Almost surely, 2^1142113311 is an apocalyptic number.

1142113311 is a deficient number, since it is larger than the sum of its proper divisors (549906449).

1142113311 is an equidigital number, since it uses as much as digits as its factorization.

1142113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42300502 (or 42300496 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1142113311 is about 33795.1669769510. The cubic root of 1142113311 is about 1045.2890422414.

Adding to 1142113311 its reverse (1133112411), we get a palindrome (2275225722).

The spelling of 1142113311 in words is "one billion, one hundred forty-two million, one hundred thirteen thousand, three hundred eleven".