3121143403 has 16 divisors (see below), whose sum is σ = 3614976000. Its totient is φ = 2639431872.

The previous prime is 3121143353. The next prime is 3121143449. The reversal of 3121143403 is 3043411213.

It is a de Polignac number, because none of the positive numbers 2^k-3121143403 is a prime.

It is a super-2 number, since 2×3121143403² = 19483072284180840818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121143803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293188 + ... + 303646.

It is an arithmetic number, because the mean of its divisors is an integer number (225936000).

Almost surely, 2^3121143403 is an apocalyptic number.

3121143403 is a deficient number, since it is larger than the sum of its proper divisors (493832597).

3121143403 is a wasteful number, since it uses less digits than its factorization.

3121143403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3121143403 is about 55867.1943362113. The cubic root of 3121143403 is about 1461.4071944321.

Adding to 3121143403 its reverse (3043411213), we get a palindrome (6164554616).

The spelling of 3121143403 in words is "three billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred three".