13534231015 has 4 divisors (see below), whose sum is σ = 16241077224. Its totient is φ = 10827384808.

The previous prime is 13534230971. The next prime is 13534231033. The reversal of 13534231015 is 51013243531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51013243531 = 31 ⋅1645588501.

It is a cyclic number.

It is not a de Polignac number, because 13534231015 - 2⁷ = 13534230887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353423097 + ... + 1353423106.

It is an arithmetic number, because the mean of its divisors is an integer number (4060269306).

Almost surely, 2^13534231015 is an apocalyptic number.

13534231015 is a deficient number, since it is larger than the sum of its proper divisors (2706846209).

13534231015 is an equidigital number, since it uses as much as digits as its factorization.

13534231015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706846208.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 13534231015 its reverse (51013243531), we get a palindrome (64547474546).

The spelling of 13534231015 in words is "thirteen billion, five hundred thirty-four million, two hundred thirty-one thousand, fifteen".