123211031323 has 4 divisors (see below), whose sum is σ = 123995815120. Its totient is φ = 122426247528.

The previous prime is 123211031309. The next prime is 123211031341. The reversal of 123211031323 is 323130112321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123211031323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123211031294 and 123211031303.

It is not an unprimeable number, because it can be changed into a prime (123211331323) 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, 392391663 + ... + 392391976.

It is an arithmetic number, because the mean of its divisors is an integer number (30998953780).

Almost surely, 2^123211031323 is an apocalyptic number.

123211031323 is a deficient number, since it is larger than the sum of its proper divisors (784783797).

123211031323 is an equidigital number, since it uses as much as digits as its factorization.

123211031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784783796.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123211031323 its reverse (323130112321), we get a palindrome (446341143644).

The spelling of 123211031323 in words is "one hundred twenty-three billion, two hundred eleven million, thirty-one thousand, three hundred twenty-three".