2312161111 has 16 divisors (see below), whose sum is σ = 2517803008. Its totient is φ = 2110600800.

The previous prime is 2312161087. The next prime is 2312161121. The reversal of 2312161111 is 1111612132.

2312161111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2312161111 - 2²³ = 2303772503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312161121) 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, 544366 + ... + 548596.

It is an arithmetic number, because the mean of its divisors is an integer number (157362688).

Almost surely, 2^2312161111 is an apocalyptic number.

2312161111 is a deficient number, since it is larger than the sum of its proper divisors (205641897).

2312161111 is a wasteful number, since it uses less digits than its factorization.

2312161111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702.

The product of its digits is 72, while the sum is 19.

The square root of 2312161111 is about 48084.9364250386. The cubic root of 2312161111 is about 1322.3285176151.

Adding to 2312161111 its reverse (1111612132), we get a palindrome (3423773243).

The spelling of 2312161111 in words is "two billion, three hundred twelve million, one hundred sixty-one thousand, one hundred eleven".