13131020231 has 8 divisors (see below), whose sum is σ = 15116420640. Its totient is φ = 11173004928.

The previous prime is 13131020219. The next prime is 13131020233. The reversal of 13131020231 is 13202013131.

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-13131020231 is a prime.

It is a super-2 number, since 2×13131020231² (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 (13131020233) 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, 6845246 + ... + 6847163.

It is an arithmetic number, because the mean of its divisors is an integer number (1889552580).

Almost surely, 2^13131020231 is an apocalyptic number.

13131020231 is a deficient number, since it is larger than the sum of its proper divisors (1985400409).

13131020231 is a wasteful number, since it uses less digits than its factorization.

13131020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692553.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13131020231 its reverse (13202013131), we get a palindrome (26333033362).

The spelling of 13131020231 in words is "thirteen billion, one hundred thirty-one million, twenty thousand, two hundred thirty-one".