2312321161 has 2 divisors, whose sum is σ = 2312321162. Its totient is φ = 2312321160.

The previous prime is 2312321159. The next prime is 2312321171. The reversal of 2312321161 is 1611232132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1984167936 + 328153225 = 44544^2 + 18115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312321161 - 2¹ = 2312321159 is a prime.

Together with 2312321159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2312321171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156160580 + 1156160581.

It is an arithmetic number, because the mean of its divisors is an integer number (1156160581).

Almost surely, 2^2312321161 is an apocalyptic number.

It is an amenable number.

2312321161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312321161 is an equidigital number, since it uses as much as digits as its factorization.

2312321161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 2312321161 is about 48086.6006388474. The cubic root of 2312321161 is about 1322.3590278586.

Adding to 2312321161 its reverse (1611232132), we get a palindrome (3923553293).

The spelling of 2312321161 in words is "two billion, three hundred twelve million, three hundred twenty-one thousand, one hundred sixty-one".