3212131313 has 4 divisors (see below), whose sum is σ = 3216714228. Its totient is φ = 3207548400.

The previous prime is 3212131297. The next prime is 3212131331. The reversal of 3212131313 is 3131312123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3131312123 = 3709 ⋅844247.

It can be written as a sum of positive squares in 2 ways, for example, as 1746236944 + 1465894369 = 41788^2 + 38287^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212131313 - 2⁴ = 3212131297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3212131913) 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, 2290406 + ... + 2291807.

It is an arithmetic number, because the mean of its divisors is an integer number (804178557).

Almost surely, 2^3212131313 is an apocalyptic number.

It is an amenable number.

3212131313 is a deficient number, since it is larger than the sum of its proper divisors (4582915).

3212131313 is an equidigital number, since it uses as much as digits as its factorization.

3212131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582914.

The product of its digits is 324, while the sum is 20.

The square root of 3212131313 is about 56675.6677331639. The cubic root of 3212131313 is about 1475.4724236798.

Adding to 3212131313 its reverse (3131312123), we get a palindrome (6343443436).

The spelling of 3212131313 in words is "three billion, two hundred twelve million, one hundred thirty-one thousand, three hundred thirteen".