605135531 has 32 divisors (see below), whose sum is σ = 838742016. Its totient is φ = 421200000.

The previous prime is 605135521. The next prime is 605135533. The reversal of 605135531 is 135531506.

It is not a de Polignac number, because 605135531 - 2¹⁰ = 605134507 is a prime.

It is a super-2 number, since 2×605135531² = 732378021757303922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 605135494 and 605135503.

It is not an unprimeable number, because it can be changed into a prime (605135533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21281 + ... + 40781.

It is an arithmetic number, because the mean of its divisors is an integer number (26210688).

Almost surely, 2^605135531 is an apocalyptic number.

605135531 is a deficient number, since it is larger than the sum of its proper divisors (233606485).

605135531 is a wasteful number, since it uses less digits than its factorization.

605135531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19563.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 605135531 is about 24599.5026575742. The cubic root of 605135531 is about 845.8322069781.

The spelling of 605135531 in words is "six hundred five million, one hundred thirty-five thousand, five hundred thirty-one".