135222031 has 16 divisors (see below), whose sum is σ = 167925760. Its totient is φ = 106259040.

The previous prime is 135222001. The next prime is 135222053. The reversal of 135222031 is 130222531.

It is a cyclic number.

It is not a de Polignac number, because 135222031 - 2¹⁹ = 134697743 is a prime.

It is a super-2 number, since 2×135222031² = 36569995335529922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135222001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12276 + ... + 20521.

It is an arithmetic number, because the mean of its divisors is an integer number (10495360).

Almost surely, 2^135222031 is an apocalyptic number.

135222031 is a deficient number, since it is larger than the sum of its proper divisors (32703729).

135222031 is a wasteful number, since it uses less digits than its factorization.

135222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32854.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 135222031 is about 11628.5008062089. The cubic root of 135222031 is about 513.2738652743.

Adding to 135222031 its reverse (130222531), we get a palindrome (265444562).

The spelling of 135222031 in words is "one hundred thirty-five million, two hundred twenty-two thousand, thirty-one".