13132313021 has 4 divisors (see below), whose sum is σ = 13220449500. Its totient is φ = 13044176544.

The previous prime is 13132313009. The next prime is 13132313041. The reversal of 13132313021 is 12031323131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6837636100 + 6294676921 = 82690^2 + 79339^2 .

It is a cyclic number.

It is not a de Polignac number, because 13132313021 - 2³⁰ = 12058571197 is a prime.

It is a super-2 number, since 2×13132313021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13132312984 and 13132313002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13132313041) 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, 44068016 + ... + 44068313.

It is an arithmetic number, because the mean of its divisors is an integer number (3305112375).

Almost surely, 2^13132313021 is an apocalyptic number.

It is an amenable number.

13132313021 is a deficient number, since it is larger than the sum of its proper divisors (88136479).

13132313021 is an equidigital number, since it uses as much as digits as its factorization.

13132313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88136478.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13132313021 its reverse (12031323131), we get a palindrome (25163636152).

The spelling of 13132313021 in words is "thirteen billion, one hundred thirty-two million, three hundred thirteen thousand, twenty-one".