3111010223261 has 2 divisors, whose sum is σ = 3111010223262. Its totient is φ = 3111010223260.

The previous prime is 3111010223213. The next prime is 3111010223267. The reversal of 3111010223261 is 1623220101113.

3111010223261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3104887160761 + 6123062500 = 1762069^2 + 78250^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111010223261 - 2¹⁴ = 3111010206877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111010223267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555505111630 + 1555505111631.

It is an arithmetic number, because the mean of its divisors is an integer number (1555505111631).

Almost surely, 2^{3111010223261} is an apocalyptic number.

It is an amenable number.

3111010223261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111010223261 is an equidigital number, since it uses as much as digits as its factorization.

3111010223261 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 23.

Adding to 3111010223261 its reverse (1623220101113), we get a palindrome (4734230324374).

The spelling of 3111010223261 in words is "three trillion, one hundred eleven billion, ten million, two hundred twenty-three thousand, two hundred sixty-one".