2312154561 has 8 divisors (see below), whose sum is σ = 3182320384. Its totient is φ = 1491712560.

The previous prime is 2312154527. The next prime is 2312154569. The reversal of 2312154561 is 1654512132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2312154561 - 2⁶ = 2312154497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312154569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12430846 + ... + 12431031.

It is an arithmetic number, because the mean of its divisors is an integer number (397790048).

Almost surely, 2^2312154561 is an apocalyptic number.

It is an amenable number.

2312154561 is a deficient number, since it is larger than the sum of its proper divisors (870165823).

2312154561 is a wasteful number, since it uses less digits than its factorization.

2312154561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24861911.

The product of its digits is 7200, while the sum is 30.

The square root of 2312154561 is about 48084.8683163425. The cubic root of 2312154561 is about 1322.3272689622.

Adding to 2312154561 its reverse (1654512132), we get a palindrome (3966666693).

The spelling of 2312154561 in words is "two billion, three hundred twelve million, one hundred fifty-four thousand, five hundred sixty-one".