13535656231 has 4 divisors (see below), whose sum is σ = 13535986464. Its totient is φ = 13535326000.

The previous prime is 13535656219. The next prime is 13535656261. The reversal of 13535656231 is 13265653531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13265653531 = 13 ⋅1020434887.

It is a cyclic number.

It is not a de Polignac number, because 13535656231 - 2⁷ = 13535656103 is a prime.

It is a super-2 number, since 2×13535656231² (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 (13535656261) 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, 93190 + ... + 189091.

It is an arithmetic number, because the mean of its divisors is an integer number (3383996616).

Almost surely, 2^13535656231 is an apocalyptic number.

13535656231 is a deficient number, since it is larger than the sum of its proper divisors (330233).

13535656231 is an equidigital number, since it uses as much as digits as its factorization.

13535656231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330232.

The product of its digits is 243000, while the sum is 40.

The spelling of 13535656231 in words is "thirteen billion, five hundred thirty-five million, six hundred fifty-six thousand, two hundred thirty-one".