2311223100061 has 2 divisors, whose sum is σ = 2311223100062. Its totient is φ = 2311223100060.

The previous prime is 2311223100029. The next prime is 2311223100157. The reversal of 2311223100061 is 1600013221132.

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., 1704771537561 + 606451562500 = 1305669^2 + 778750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311223100061 - 2⁵ = 2311223100029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311223400061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155611550030 + 1155611550031.

It is an arithmetic number, because the mean of its divisors is an integer number (1155611550031).

Almost surely, 2^{2311223100061} is an apocalyptic number.

It is an amenable number.

2311223100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311223100061 is an equidigital number, since it uses as much as digits as its factorization.

2311223100061 is an evil number, because the sum of its binary digits is even.

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

Adding to 2311223100061 its reverse (1600013221132), we get a palindrome (3911236321193).

The spelling of 2311223100061 in words is "two trillion, three hundred eleven billion, two hundred twenty-three million, one hundred thousand, sixty-one".