123311210311 has 4 divisors (see below), whose sum is σ = 125332705624. Its totient is φ = 121289715000.

The previous prime is 123311210291. The next prime is 123311210317. The reversal of 123311210311 is 113012113321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113012113321 = 41113 ⋅2748817.

It is a cyclic number.

It is not a de Polignac number, because 123311210311 - 2²⁹ = 122774339399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311210317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010747565 + ... + 1010747686.

It is an arithmetic number, because the mean of its divisors is an integer number (31333176406).

Almost surely, 2^123311210311 is an apocalyptic number.

123311210311 is a deficient number, since it is larger than the sum of its proper divisors (2021495313).

123311210311 is an equidigital number, since it uses as much as digits as its factorization.

123311210311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021495312.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123311210311 its reverse (113012113321), we get a palindrome (236323323632).

The spelling of 123311210311 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred ten thousand, three hundred eleven".