135222533531 has 4 divisors (see below), whose sum is σ = 142339509000. Its totient is φ = 128105558064.

The previous prime is 135222533527. The next prime is 135222533539. The reversal of 135222533531 is 135335222531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135222533531 - 2² = 135222533527 is a prime.

It is a super-2 number, since 2×135222533531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135222533491 and 135222533500.

It is not an unprimeable number, because it can be changed into a prime (135222533539) 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, 3558487706 + ... + 3558487743.

It is an arithmetic number, because the mean of its divisors is an integer number (35584877250).

Almost surely, 2^135222533531 is an apocalyptic number.

135222533531 is a deficient number, since it is larger than the sum of its proper divisors (7116975469).

135222533531 is an equidigital number, since it uses as much as digits as its factorization.

135222533531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116975468.

The product of its digits is 81000, while the sum is 35.

The spelling of 135222533531 in words is "one hundred thirty-five billion, two hundred twenty-two million, five hundred thirty-three thousand, five hundred thirty-one".