135311011251 has 16 divisors (see below), whose sum is σ = 194499261600. Its totient is φ = 83179802880.

The previous prime is 135311011219. The next prime is 135311011259. The reversal of 135311011251 is 152110113531.

It is not a de Polignac number, because 135311011251 - 2⁵ = 135311011219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135311011259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806826 + ... + 1880223.

It is an arithmetic number, because the mean of its divisors is an integer number (12156203850).

Almost surely, 2^135311011251 is an apocalyptic number.

135311011251 is a deficient number, since it is larger than the sum of its proper divisors (59188250349).

135311011251 is a wasteful number, since it uses less digits than its factorization.

135311011251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688006.

The product of its (nonzero) digits is 450, while the sum is 24.

Adding to 135311011251 its reverse (152110113531), we get a palindrome (287421124782).

The spelling of 135311011251 in words is "one hundred thirty-five billion, three hundred eleven million, eleven thousand, two hundred fifty-one".