3121442313 has 8 divisors (see below), whose sum is σ = 4540279776. Its totient is φ = 1891783200.

The previous prime is 3121442251. The next prime is 3121442329. The reversal of 3121442313 is 3132441213.

It is a happy number.

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

It is not a de Polignac number, because 3121442313 - 2¹⁰ = 3121441289 is a prime.

It is a super-2 number, since 2×3121442313² = 19486804226773579938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3121442383) 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, 47294548 + ... + 47294613.

It is an arithmetic number, because the mean of its divisors is an integer number (567534972).

Almost surely, 2^3121442313 is an apocalyptic number.

3121442313 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3121442313 is a deficient number, since it is larger than the sum of its proper divisors (1418837463).

3121442313 is a wasteful number, since it uses less digits than its factorization.

3121442313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94589175.

The product of its digits is 1728, while the sum is 24.

The square root of 3121442313 is about 55869.8694557272. The cubic root of 3121442313 is about 1461.4538456347.

Adding to 3121442313 its reverse (3132441213), we get a palindrome (6253883526).

The spelling of 3121442313 in words is "three billion, one hundred twenty-one million, four hundred forty-two thousand, three hundred thirteen".