3111142 has 4 divisors (see below), whose sum is σ = 4666716. Its totient is φ = 1555570.

The previous prime is 3111137. The next prime is 3111151. The reversal of 3111142 is 2411113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2411113 = 23 ⋅104831.

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, 777784 + ... + 777787.

It is an arithmetic number, because the mean of its divisors is an integer number (1166679).

Almost surely, 2^3111142 is an apocalyptic number.

3111142 is a deficient number, since it is larger than the sum of its proper divisors (1555574).

3111142 is a wasteful number, since it uses less digits than its factorization.

3111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555573.

The product of its digits is 24, while the sum is 13.

The square root of 3111142 is about 1763.8429635316. The cubic root of 3111142 is about 145.9844544654.

Adding to 3111142 its reverse (2411113), we get a palindrome (5522255).

The spelling of 3111142 in words is "three million, one hundred eleven thousand, one hundred forty-two".