3121232013 has 24 divisors (see below), whose sum is σ = 4620007392. Its totient is φ = 2029472928.

The previous prime is 3121232003. The next prime is 3121232029. The reversal of 3121232013 is 3102321213.

It is not a de Polignac number, because 3121232013 - 2¹² = 3121227917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121232003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278170 + ... + 289172.

It is an arithmetic number, because the mean of its divisors is an integer number (192500308).

Almost surely, 2^3121232013 is an apocalyptic number.

It is an amenable number.

3121232013 is a deficient number, since it is larger than the sum of its proper divisors (1498775379).

3121232013 is a wasteful number, since it uses less digits than its factorization.

3121232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11785 (or 11782 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3121232013 is about 55867.9873720183. The cubic root of 3121232013 is about 1461.4210241999.

Adding to 3121232013 its reverse (3102321213), we get a palindrome (6223553226).

The spelling of 3121232013 in words is "three billion, one hundred twenty-one million, two hundred thirty-two thousand, thirteen".