135531769 has 8 divisors (see below), whose sum is σ = 151057440. Its totient is φ = 120845376.

The previous prime is 135531757. The next prime is 135531787. The reversal of 135531769 is 967135531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135531769 - 2⁹ = 135531257 is a prime.

It is a super-2 number, since 2×135531769² = 36737720816538722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135531719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209479 + ... + 210124.

It is an arithmetic number, because the mean of its divisors is an integer number (18882180).

Almost surely, 2^135531769 is an apocalyptic number.

135531769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

135531769 is a deficient number, since it is larger than the sum of its proper divisors (15525671).

135531769 is a wasteful number, since it uses less digits than its factorization.

135531769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419639.

The product of its digits is 85050, while the sum is 40.

The square root of 135531769 is about 11641.8112422423. The cubic root of 135531769 is about 513.6654661283.

It can be divided in two parts, 1355 and 31769, that added together give a square (33124 = 182²).

The spelling of 135531769 in words is "one hundred thirty-five million, five hundred thirty-one thousand, seven hundred sixty-nine".