3121412421 has 4 divisors (see below), whose sum is σ = 4161883232. Its totient is φ = 2080941612.

The previous prime is 3121412387. The next prime is 3121412443. The reversal of 3121412421 is 1242141213.

3121412421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3121412421 - 2²⁵ = 3087857989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121412821) 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, 520235401 + ... + 520235406.

It is an arithmetic number, because the mean of its divisors is an integer number (1040470808).

Almost surely, 2^3121412421 is an apocalyptic number.

It is an amenable number.

3121412421 is a deficient number, since it is larger than the sum of its proper divisors (1040470811).

3121412421 is a wasteful number, since it uses less digits than its factorization.

3121412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040470810.

The product of its digits is 384, while the sum is 21.

The square root of 3121412421 is about 55869.6019405902. The cubic root of 3121412421 is about 1461.4491804924.

Adding to 3121412421 its reverse (1242141213), we get a palindrome (4363553634).

The spelling of 3121412421 in words is "three billion, one hundred twenty-one million, four hundred twelve thousand, four hundred twenty-one".