3121243001 has 4 divisors (see below), whose sum is σ = 3228872100. Its totient is φ = 3013613904.

The previous prime is 3121242997. The next prime is 3121243007. The reversal of 3121243001 is 1003421213.

3121243001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1108823401 + 2012419600 = 33299^2 + 44860^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121243001 - 2² = 3121242997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121243007) 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, 53814506 + ... + 53814563.

It is an arithmetic number, because the mean of its divisors is an integer number (807218025).

Almost surely, 2^3121243001 is an apocalyptic number.

It is an amenable number.

3121243001 is a deficient number, since it is larger than the sum of its proper divisors (107629099).

3121243001 is a wasteful number, since it uses less digits than its factorization.

3121243001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107629098.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3121243001 is about 55868.0857108958. The cubic root of 3121243001 is about 1461.4227391291.

Adding to 3121243001 its reverse (1003421213), we get a palindrome (4124664214).

The spelling of 3121243001 in words is "three billion, one hundred twenty-one million, two hundred forty-three thousand, one".