2131311142 has 4 divisors (see below), whose sum is σ = 3196966716. Its totient is φ = 1065655570.

The previous prime is 2131311109. The next prime is 2131311151. The reversal of 2131311142 is 2411131312.

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, 532827784 + ... + 532827787.

It is an arithmetic number, because the mean of its divisors is an integer number (799241679).

Almost surely, 2^2131311142 is an apocalyptic number.

2131311142 is a deficient number, since it is larger than the sum of its proper divisors (1065655574).

2131311142 is a wasteful number, since it uses less digits than its factorization.

2131311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065655573.

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

The square root of 2131311142 is about 46166.1254817859. The cubic root of 2131311142 is about 1286.9122999977.

Adding to 2131311142 its reverse (2411131312), we get a palindrome (4542442454).

The spelling of 2131311142 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, one hundred forty-two".