135531323446 has 8 divisors (see below), whose sum is σ = 207132777504. Its totient is φ = 66487064280.

The previous prime is 135531323371. The next prime is 135531323489. The reversal of 135531323446 is 644323135531.

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

It is a junction number, because it is equal to n+sod(n) for n = 135531323399 and 135531323408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639298590 + ... + 639298801.

It is an arithmetic number, because the mean of its divisors is an integer number (25891597188).

Almost surely, 2^135531323446 is an apocalyptic number.

135531323446 is a deficient number, since it is larger than the sum of its proper divisors (71601454058).

135531323446 is a wasteful number, since it uses less digits than its factorization.

135531323446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278597446.

The product of its digits is 388800, while the sum is 40.

Adding to 135531323446 its reverse (644323135531), we get a palindrome (779854458977).

The spelling of 135531323446 in words is "one hundred thirty-five billion, five hundred thirty-one million, three hundred twenty-three thousand, four hundred forty-six".