135023131 has 8 divisors (see below), whose sum is σ = 135842400. Its totient is φ = 134207040.

The previous prime is 135023123. The next prime is 135023173. The reversal of 135023131 is 131320531.

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 135023131 - 2³ = 135023123 is a prime.

It is a super-2 number, since 2×135023131² = 36462491810086322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135023099 and 135023108.

It is not an unprimeable number, because it can be changed into a prime (135023531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203941 + ... + 204601.

It is an arithmetic number, because the mean of its divisors is an integer number (16980300).

Almost surely, 2^135023131 is an apocalyptic number.

135023131 is a deficient number, since it is larger than the sum of its proper divisors (819269).

135023131 is an equidigital number, since it uses as much as digits as its factorization.

135023131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 135023131 is about 11619.9453957409. The cubic root of 135023131 is about 513.0220811843.

Adding to 135023131 its reverse (131320531), we get a palindrome (266343662).

The spelling of 135023131 in words is "one hundred thirty-five million, twenty-three thousand, one hundred thirty-one".