11311142 has 4 divisors (see below), whose sum is σ = 16966716. Its totient is φ = 5655570.

The previous prime is 11311133. The next prime is 11311177. The reversal of 11311142 is 24111311.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827784 + ... + 2827787.

It is an arithmetic number, because the mean of its divisors is an integer number (4241679).

Almost surely, 2^11311142 is an apocalyptic number.

11311142 is a deficient number, since it is larger than the sum of its proper divisors (5655574).

11311142 is an equidigital number, since it uses as much as digits as its factorization.

11311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655573.

The product of its digits is 24, while the sum is 14.

The square root of 11311142 is about 3363.2041270194. The cubic root of 11311142 is about 224.4754331148.

Adding to 11311142 its reverse (24111311), we get a palindrome (35422453).

The spelling of 11311142 in words is "eleven million, three hundred eleven thousand, one hundred forty-two".