3131120213 has 8 divisors (see below), whose sum is σ = 3443720448. Its totient is φ = 2828769264.

The previous prime is 3131120189. The next prime is 3131120221. The reversal of 3131120213 is 3120211313.

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 3131120213 - 2⁶ = 3131120149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131120191 and 3131120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131120233) 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, 2561681 + ... + 2562902.

It is an arithmetic number, because the mean of its divisors is an integer number (430465056).

Almost surely, 2^3131120213 is an apocalyptic number.

It is an amenable number.

3131120213 is a deficient number, since it is larger than the sum of its proper divisors (312600235).

3131120213 is a wasteful number, since it uses less digits than its factorization.

3131120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124643.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3131120213 is about 55956.4135108747. The cubic root of 3131120213 is about 1462.9626793148.

Adding to 3131120213 its reverse (3120211313), we get a palindrome (6251331526).

The spelling of 3131120213 in words is "three billion, one hundred thirty-one million, one hundred twenty thousand, two hundred thirteen".