135580031 has 4 divisors (see below), whose sum is σ = 136478064. Its totient is φ = 134682000.

The previous prime is 135579979. The next prime is 135580043. The reversal of 135580031 is 130085531.

135580031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130085531 = 233 ⋅558307.

It is a cyclic number.

It is not a de Polignac number, because 135580031 - 2¹⁰ = 135579007 is a prime.

It is a super-2 number, since 2×135580031² = 36763889611921922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135580091) 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, 448790 + ... + 449091.

It is an arithmetic number, because the mean of its divisors is an integer number (34119516).

Almost surely, 2^135580031 is an apocalyptic number.

135580031 is a deficient number, since it is larger than the sum of its proper divisors (898033).

135580031 is an equidigital number, since it uses as much as digits as its factorization.

135580031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898032.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 135580031 is about 11643.8838451781. The cubic root of 135580031 is about 513.7264298933.

The spelling of 135580031 in words is "one hundred thirty-five million, five hundred eighty thousand, thirty-one".