2312115405 has 16 divisors (see below), whose sum is σ = 3699984960. Its totient is φ = 1232928128.

The previous prime is 2312115389. The next prime is 2312115409. The reversal of 2312115405 is 5045112132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2312115405 - 2⁴ = 2312115389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312115409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158041 + ... + 172049.

It is an arithmetic number, because the mean of its divisors is an integer number (231249060).

Almost surely, 2^2312115405 is an apocalyptic number.

It is an amenable number.

2312115405 is a deficient number, since it is larger than the sum of its proper divisors (1387869555).

2312115405 is a wasteful number, since it uses less digits than its factorization.

2312115405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25020.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2312115405 is about 48084.4611595056. The cubic root of 2312115405 is about 1322.3198044469.

Adding to 2312115405 its reverse (5045112132), we get a palindrome (7357227537).

The spelling of 2312115405 in words is "two billion, three hundred twelve million, one hundred fifteen thousand, four hundred five".