23031012161 has 2 divisors, whose sum is σ = 23031012162. Its totient is φ = 23031012160.

The previous prime is 23031012047. The next prime is 23031012181. The reversal of 23031012161 is 16121013032.

It is an a-pointer prime, because the next prime (23031012181) can be obtained adding 23031012161 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19270992400 + 3760019761 = 138820^2 + 61319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031012161 is a prime.

It is not a weakly prime, because it can be changed into another prime (23031012181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515506080 + 11515506081.

It is an arithmetic number, because the mean of its divisors is an integer number (11515506081).

Almost surely, 2^23031012161 is an apocalyptic number.

It is an amenable number.

23031012161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031012161 is an equidigital number, since it uses as much as digits as its factorization.

23031012161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 23031012161 its reverse (16121013032), we get a palindrome (39152025193).

The spelling of 23031012161 in words is "twenty-three billion, thirty-one million, twelve thousand, one hundred sixty-one".