2311987382 has 4 divisors (see below), whose sum is σ = 3467981076. Its totient is φ = 1155993690.

The previous prime is 2311987367. The next prime is 2311987399. The reversal of 2311987382 is 2837891132.

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, 577996844 + ... + 577996847.

It is an arithmetic number, because the mean of its divisors is an integer number (866995269).

Almost surely, 2^2311987382 is an apocalyptic number.

2311987382 is a deficient number, since it is larger than the sum of its proper divisors (1155993694).

2311987382 is a wasteful number, since it uses less digits than its factorization.

2311987382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155993693.

The product of its digits is 145152, while the sum is 44.

The square root of 2311987382 is about 48083.1299106038. The cubic root of 2311987382 is about 1322.2953981576.

The spelling of 2311987382 in words is "two billion, three hundred eleven million, nine hundred eighty-seven thousand, three hundred eighty-two".