3143420521 has 4 divisors (see below), whose sum is σ = 3143664000. Its totient is φ = 3143177044.

The previous prime is 3143420503. The next prime is 3143420549. The reversal of 3143420521 is 1250243413.

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 3143420521 - 2³¹ = 995936873 is a prime.

It is a super-2 number, since 2×3143420521² = 19762185143687822882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3143420551) 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, 101221 + ... + 128578.

It is an arithmetic number, because the mean of its divisors is an integer number (785916000).

Almost surely, 2^3143420521 is an apocalyptic number.

It is an amenable number.

3143420521 is a deficient number, since it is larger than the sum of its proper divisors (243479).

3143420521 is a wasteful number, since it uses less digits than its factorization.

3143420521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243478.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 3143420521 is about 56066.2155045264. The cubic root of 3143420521 is about 1464.8758794772.

Adding to 3143420521 its reverse (1250243413), we get a palindrome (4393663934).

The spelling of 3143420521 in words is "three billion, one hundred forty-three million, four hundred twenty thousand, five hundred twenty-one".