2312406561 has 4 divisors (see below), whose sum is σ = 3083208752. Its totient is φ = 1541604372.

The previous prime is 2312406539. The next prime is 2312406659. The reversal of 2312406561 is 1656042132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2312406561 - 2⁶ = 2312406497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312406461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385401091 + ... + 385401096.

It is an arithmetic number, because the mean of its divisors is an integer number (770802188).

Almost surely, 2^2312406561 is an apocalyptic number.

It is an amenable number.

2312406561 is a deficient number, since it is larger than the sum of its proper divisors (770802191).

2312406561 is an equidigital number, since it uses as much as digits as its factorization.

2312406561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770802190.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2312406561 is about 48087.4886119040. The cubic root of 2312406561 is about 1322.3753070377.

Adding to 2312406561 its reverse (1656042132), we get a palindrome (3968448693).

The spelling of 2312406561 in words is "two billion, three hundred twelve million, four hundred six thousand, five hundred sixty-one".