3201154421 has 4 divisors (see below), whose sum is σ = 3340335072. Its totient is φ = 3061973772.

The previous prime is 3201154373. The next prime is 3201154423. The reversal of 3201154421 is 1244511023.

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 a de Polignac number, because none of the positive numbers 2^k-3201154421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 139180627 = 3201154421 / (3 + 2 + 0 + 1 + 1 + 5 + 4 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201154423) 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, 69590291 + ... + 69590336.

It is an arithmetic number, because the mean of its divisors is an integer number (835083768).

Almost surely, 2^3201154421 is an apocalyptic number.

It is an amenable number.

3201154421 is a deficient number, since it is larger than the sum of its proper divisors (139180651).

3201154421 is a wasteful number, since it uses less digits than its factorization.

3201154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139180650.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 3201154421 is about 56578.7453112916. The cubic root of 3201154421 is about 1473.7897832897.

Adding to 3201154421 its reverse (1244511023), we get a palindrome (4445665444).

The spelling of 3201154421 in words is "three billion, two hundred one million, one hundred fifty-four thousand, four hundred twenty-one".