13213123331 has 8 divisors (see below), whose sum is σ = 13374863040. Its totient is φ = 13051444392.

The previous prime is 13213123321. The next prime is 13213123349. The reversal of 13213123331 is 13332131231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13213123331 is a prime.

It is a super-2 number, since 2×13213123331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213123297 and 13213123306.

It is not an unprimeable number, because it can be changed into a prime (13213123321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549560 + ... + 573098.

It is an arithmetic number, because the mean of its divisors is an integer number (1671857880).

Almost surely, 2^13213123331 is an apocalyptic number.

13213123331 is a deficient number, since it is larger than the sum of its proper divisors (161739709).

13213123331 is an equidigital number, since it uses as much as digits as its factorization.

13213123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30385.

The product of its digits is 972, while the sum is 23.

Adding to 13213123331 its reverse (13332131231), we get a palindrome (26545254562).

The spelling of 13213123331 in words is "thirteen billion, two hundred thirteen million, one hundred twenty-three thousand, three hundred thirty-one".