3140521 has 4 divisors (see below), whose sum is σ = 3159952. Its totient is φ = 3121092.

The previous prime is 3140513. The next prime is 3140551. The reversal of 3140521 is 1250413.

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.

It is a cyclic number.

It is not a de Polignac number, because 3140521 - 2³ = 3140513 is a prime.

It is a Duffinian number.

3140521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3140495 and 3140504.

It is not an unprimeable number, because it can be changed into a prime (3140551) 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, 9471 + ... + 9796.

It is an arithmetic number, because the mean of its divisors is an integer number (789988).

Almost surely, 2^3140521 is an apocalyptic number.

It is an amenable number.

3140521 is a deficient number, since it is larger than the sum of its proper divisors (19431).

3140521 is a wasteful number, since it uses less digits than its factorization.

3140521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19430.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3140521 is about 1772.1515172242. The cubic root of 3140521 is about 146.4425335770.

Adding to 3140521 its reverse (1250413), we get a palindrome (4390934).

The spelling of 3140521 in words is "three million, one hundred forty thousand, five hundred twenty-one".