3161421203 has 4 divisors (see below), whose sum is σ = 3179695488. Its totient is φ = 3143146920.

The previous prime is 3161421181. The next prime is 3161421233. The reversal of 3161421203 is 3021241613.

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

It is a cyclic number.

It is not a de Polignac number, because 3161421203 - 2¹⁴ = 3161404819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3161421233) 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, 9136883 + ... + 9137228.

It is an arithmetic number, because the mean of its divisors is an integer number (794923872).

Almost surely, 2^3161421203 is an apocalyptic number.

3161421203 is a deficient number, since it is larger than the sum of its proper divisors (18274285).

3161421203 is a wasteful number, since it uses less digits than its factorization.

3161421203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18274284.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3161421203 is about 56226.5169026146. The cubic root of 3161421203 is about 1467.6667449231. Note that the first 3 decimals are identical.

Adding to 3161421203 its reverse (3021241613), we get a palindrome (6182662816).

The spelling of 3161421203 in words is "three billion, one hundred sixty-one million, four hundred twenty-one thousand, two hundred three".