13123201311 has 40 divisors (see below), whose sum is σ = 21404286288. Its totient is φ = 7946640000.

The previous prime is 13123201309. The next prime is 13123201327. The reversal of 13123201311 is 11310232131.

13123201311 is a `hidden beast` number, since 1 + 31 + 2 + 320 + 1 + 311 = 666.

It is not a de Polignac number, because 13123201311 - 2¹ = 13123201309 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123201381) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1153531 + ... + 1164851.

Almost surely, 2^13123201311 is an apocalyptic number.

13123201311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13123201311 is a deficient number, since it is larger than the sum of its proper divisors (8281084977).

13123201311 is a wasteful number, since it uses less digits than its factorization.

13123201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12645 (or 12636 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13123201311 its reverse (11310232131), we get a palindrome (24433433442).

The spelling of 13123201311 in words is "thirteen billion, one hundred twenty-three million, two hundred one thousand, three hundred eleven".