23120001309961 has 2 divisors, whose sum is σ = 23120001309962. Its totient is φ = 23120001309960.

The previous prime is 23120001309941. The next prime is 23120001310013. The reversal of 23120001309961 is 16990310002132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23100221700361 + 19779609600 = 4806269^2 + 140640^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120001309961 - 2²⁵ = 23119967755529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23120001309961.

It is not a weakly prime, because it can be changed into another prime (23120001309931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560000654980 + 11560000654981.

It is an arithmetic number, because the mean of its divisors is an integer number (11560000654981).

Almost surely, 2^{23120001309961} is an apocalyptic number.

It is an amenable number.

23120001309961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120001309961 is an equidigital number, since it uses as much as digits as its factorization.

23120001309961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 23120001309961 in words is "twenty-three trillion, one hundred twenty billion, one million, three hundred nine thousand, nine hundred sixty-one".