3146430421 has 4 divisors (see below), whose sum is σ = 3174275052. Its totient is φ = 3118585792.

The previous prime is 3146430401. The next prime is 3146430437. The reversal of 3146430421 is 1240346413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 546858225 + 2599572196 = 23385^2 + 50986^2 .

It is a cyclic number.

It is not a de Polignac number, because 3146430421 - 2²⁵ = 3112875989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3146430421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3146430401) 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, 13922146 + ... + 13922371.

It is an arithmetic number, because the mean of its divisors is an integer number (793568763).

Almost surely, 2^3146430421 is an apocalyptic number.

It is an amenable number.

3146430421 is a deficient number, since it is larger than the sum of its proper divisors (27844631).

3146430421 is a wasteful number, since it uses less digits than its factorization.

3146430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27844630.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 3146430421 is about 56093.0514502465. The cubic root of 3146430421 is about 1465.3432815048.

Adding to 3146430421 its reverse (1240346413), we get a palindrome (4386776834).

The spelling of 3146430421 in words is "three billion, one hundred forty-six million, four hundred thirty thousand, four hundred twenty-one".