13535455021231 has 32 divisors (see below), whose sum is σ = 16839225345600. Its totient is φ = 10688990791680.

The previous prime is 13535455021219. The next prime is 13535455021237. The reversal of 13535455021231 is 13212055453531.

It is a cyclic number.

It is not a de Polignac number, because 13535455021231 - 2¹⁷ = 13535454890159 is a prime.

It is a super-2 number, since 2×13535455021231² (a number of 27 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 (13535455021237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20061805 + ... + 20725513.

It is an arithmetic number, because the mean of its divisors is an integer number (526225792050).

Almost surely, 2^{13535455021231} is an apocalyptic number.

13535455021231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13535455021231 is a deficient number, since it is larger than the sum of its proper divisors (3303770324369).

13535455021231 is a wasteful number, since it uses less digits than its factorization.

13535455021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672139.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 13535455021231 in words is "thirteen trillion, five hundred thirty-five billion, four hundred fifty-five million, twenty-one thousand, two hundred thirty-one".