3135681 has 12 divisors (see below), whose sum is σ = 4675840. Its totient is φ = 2022840.

The previous prime is 3135677. The next prime is 3135707. The reversal of 3135681 is 1865313.

It is not a de Polignac number, because 3135681 - 2² = 3135677 is a prime.

It is a super-2 number, since 2×3135681² = 19664990667522, which contains 22 as substring.

It is a Duffinian number.

3135681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3135641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5341 + ... + 5898.

Almost surely, 2^3135681 is an apocalyptic number.

3135681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3135681 is a deficient number, since it is larger than the sum of its proper divisors (1540159).

3135681 is a wasteful number, since it uses less digits than its factorization.

3135681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276 (or 11273 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3135681 is about 1770.7854189596. The cubic root of 3135681 is about 146.3672651437.

The spelling of 3135681 in words is "three million, one hundred thirty-five thousand, six hundred eighty-one".