135288120315531 has 32 divisors (see below), whose sum is σ = 191783299276800. Its totient is φ = 84536402112000.

The previous prime is 135288120315529. The next prime is 135288120315539. The reversal of 135288120315531 is 135513021882531.

It is not a de Polignac number, because 135288120315531 - 2¹ = 135288120315529 is a prime.

It is a super-2 number, since 2×135288120315531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135288120315539) 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, 89355525 + ... + 90856953.

It is an arithmetic number, because the mean of its divisors is an integer number (5993228102400).

Almost surely, 2^{135288120315531} is an apocalyptic number.

135288120315531 is a deficient number, since it is larger than the sum of its proper divisors (56495178961269).

135288120315531 is a wasteful number, since it uses less digits than its factorization.

135288120315531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508739.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 135288120315531 in words is "one hundred thirty-five trillion, two hundred eighty-eight billion, one hundred twenty million, three hundred fifteen thousand, five hundred thirty-one".