3121201231 has 8 divisors (see below), whose sum is σ = 3334513280. Its totient is φ = 2912793048.

The previous prime is 3121201189. The next prime is 3121201313. The reversal of 3121201231 is 1321021213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121201231 - 2⁷ = 3121201103 is a prime.

It is a super-2 number, since 2×3121201231² = 19483794248791830722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121201931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224651 + ... + 1227196.

It is an arithmetic number, because the mean of its divisors is an integer number (416814160).

Almost surely, 2^3121201231 is an apocalyptic number.

3121201231 is a deficient number, since it is larger than the sum of its proper divisors (213312049).

3121201231 is a wasteful number, since it uses less digits than its factorization.

3121201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451933.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121201231 is about 55867.7118826250. The cubic root of 3121201231 is about 1461.4162199421.

Adding to 3121201231 its reverse (1321021213), we get a palindrome (4442222444).

The spelling of 3121201231 in words is "three billion, one hundred twenty-one million, two hundred one thousand, two hundred thirty-one".