3136021 has 4 divisors (see below), whose sum is σ = 3584032. Its totient is φ = 2688012.

The previous prime is 3136019. The next prime is 3136037. The reversal of 3136021 is 1206313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1206313 = 29 ⋅41597.

It is a cyclic number.

It is not a de Polignac number, because 3136021 - 2¹ = 3136019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3135986 and 3136004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223995 + ... + 224008.

It is an arithmetic number, because the mean of its divisors is an integer number (896008).

Almost surely, 2^3136021 is an apocalyptic number.

It is an amenable number.

3136021 is a deficient number, since it is larger than the sum of its proper divisors (448011).

3136021 is an equidigital number, since it uses as much as digits as its factorization.

3136021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448010.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3136021 is about 1770.8814189550. The cubic root of 3136021 is about 146.3725551239.

The spelling of 3136021 in words is "three million, one hundred thirty-six thousand, twenty-one".