2311230312111 has 16 divisors (see below), whose sum is σ = 3570119623424. Its totient is φ = 1302611212224.

The previous prime is 2311230312073. The next prime is 2311230312133. The reversal of 2311230312111 is 1112130321132.

It is not a de Polignac number, because 2311230312111 - 2²⁵ = 2311196757679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311230312161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753824401 + ... + 753827466.

It is an arithmetic number, because the mean of its divisors is an integer number (223132476464).

Almost surely, 2^{2311230312111} is an apocalyptic number.

2311230312111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2311230312111 is a deficient number, since it is larger than the sum of its proper divisors (1258889311313).

2311230312111 is a wasteful number, since it uses less digits than its factorization.

2311230312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507651950.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2311230312111 its reverse (1112130321132), we get a palindrome (3423360633243).

The spelling of 2311230312111 in words is "two trillion, three hundred eleven billion, two hundred thirty million, three hundred twelve thousand, one hundred eleven".