3123121701 has 8 divisors (see below), whose sum is σ = 4759042624. Its totient is φ = 1784640960.

The previous prime is 3123121699. The next prime is 3123121711. The reversal of 3123121701 is 1071213213.

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 3123121701 - 2¹ = 3123121699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 148720081 = 3123121701 / (3 + 1 + 2 + 3 + 1 + 2 + 1 + 7 + 0 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123121711) 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, 74360020 + ... + 74360061.

It is an arithmetic number, because the mean of its divisors is an integer number (594880328).

Almost surely, 2^3123121701 is an apocalyptic number.

It is an amenable number.

3123121701 is a deficient number, since it is larger than the sum of its proper divisors (1635920923).

3123121701 is a wasteful number, since it uses less digits than its factorization.

3123121701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148720091.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 3123121701 is about 55884.8968953151. The cubic root of 3123121701 is about 1461.7158941555.

Adding to 3123121701 its reverse (1071213213), we get a palindrome (4194334914).

The spelling of 3123121701 in words is "three billion, one hundred twenty-three million, one hundred twenty-one thousand, seven hundred one".