2131111364 has 48 divisors (see below), whose sum is σ = 4163241600. Its totient is φ = 948589056.

The previous prime is 2131111361. The next prime is 2131111369. The reversal of 2131111364 is 4631111312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2131111361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380377 + ... + 1381919.

It is an arithmetic number, because the mean of its divisors is an integer number (86734200).

Almost surely, 2^2131111364 is an apocalyptic number.

It is an amenable number.

2131111364 is a deficient number, since it is larger than the sum of its proper divisors (2032130236).

2131111364 is a wasteful number, since it uses less digits than its factorization.

2131111364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652 (or 2650 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 2131111364 is about 46163.9617450669. The cubic root of 2131111364 is about 1286.8720892570.

Adding to 2131111364 its reverse (4631111312), we get a palindrome (6762222676).

The spelling of 2131111364 in words is "two billion, one hundred thirty-one million, one hundred eleven thousand, three hundred sixty-four".