13155435231 has 8 divisors (see below), whose sum is σ = 17737665840. Its totient is φ = 8671747392.

The previous prime is 13155435191. The next prime is 13155435247. The reversal of 13155435231 is 13253455131.

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

It is not a de Polignac number, because 13155435231 - 2⁷ = 13155435103 is a prime.

It is a super-2 number, since 2×13155435231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13155435192 and 13155435201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155430231) 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, 24635380 + ... + 24635913.

It is an arithmetic number, because the mean of its divisors is an integer number (2217208230).

Almost surely, 2^13155435231 is an apocalyptic number.

13155435231 is a deficient number, since it is larger than the sum of its proper divisors (4582230609).

13155435231 is an equidigital number, since it uses as much as digits as its factorization.

13155435231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49271385.

The product of its digits is 27000, while the sum is 33.

The spelling of 13155435231 in words is "thirteen billion, one hundred fifty-five million, four hundred thirty-five thousand, two hundred thirty-one".