12123032311 has 12 divisors (see below), whose sum is σ = 13156115952. Its totient is φ = 11165933376.

The previous prime is 12123032309. The next prime is 12123032347. The reversal of 12123032311 is 11323032121.

It is not a de Polignac number, because 12123032311 - 2¹ = 12123032309 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 (12123032381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1251 + ... + 155716.

It is an arithmetic number, because the mean of its divisors is an integer number (1096342996).

Almost surely, 2^12123032311 is an apocalyptic number.

12123032311 is a deficient number, since it is larger than the sum of its proper divisors (1033083641).

12123032311 is a wasteful number, since it uses less digits than its factorization.

12123032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157450 (or 157437 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12123032311 its reverse (11323032121), we get a palindrome (23446064432).

The spelling of 12123032311 in words is "twelve billion, one hundred twenty-three million, thirty-two thousand, three hundred eleven".