3121032313 has 6 divisors (see below), whose sum is σ = 3630588666. Its totient is φ = 2675170512.

The previous prime is 3121032289. The next prime is 3121032337. The reversal of 3121032313 is 3132301213.

3121032313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3121032289) and next prime (3121032337).

It can be written as a sum of positive squares in only one way, i.e., 2844408889 + 276623424 = 53333^2 + 16632^2 .

It is not a de Polignac number, because 3121032313 - 2²⁹ = 2584161401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121042313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31847220 + ... + 31847317.

It is an arithmetic number, because the mean of its divisors is an integer number (605098111).

Almost surely, 2^3121032313 is an apocalyptic number.

It is an amenable number.

3121032313 is a deficient number, since it is larger than the sum of its proper divisors (509556353).

3121032313 is an equidigital number, since it uses as much as digits as its factorization.

3121032313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63694551 (or 63694544 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3121032313 is about 55866.2000945115. The cubic root of 3121032313 is about 1461.3898557381.

Adding to 3121032313 its reverse (3132301213), we get a palindrome (6253333526).

The spelling of 3121032313 in words is "three billion, one hundred twenty-one million, thirty-two thousand, three hundred thirteen".