13021043231 has 8 divisors (see below), whose sum is σ = 15197813760. Its totient is φ = 10923428088.

The previous prime is 13021043221. The next prime is 13021043249. The reversal of 13021043231 is 13234012031.

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

It is a cyclic number.

It is not a de Polignac number, because 13021043231 - 2¹⁴ = 13021026847 is a prime.

It is a super-2 number, since 2×13021043231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021043221) 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, 19788491 + ... + 19789148.

It is an arithmetic number, because the mean of its divisors is an integer number (1899726720).

Almost surely, 2^13021043231 is an apocalyptic number.

13021043231 is a deficient number, since it is larger than the sum of its proper divisors (2176770529).

13021043231 is an equidigital number, since it uses as much as digits as its factorization.

13021043231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39577693.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13021043231 its reverse (13234012031), we get a palindrome (26255055262).

The spelling of 13021043231 in words is "thirteen billion, twenty-one million, forty-three thousand, two hundred thirty-one".