3121730051 has 8 divisors (see below), whose sum is σ = 3469779504. Its totient is φ = 2784389920.

The previous prime is 3121730041. The next prime is 3121730081. The reversal of 3121730051 is 1500371213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121730051 is a prime.

It is a super-2 number, since 2×3121730051² = 19490397022632925202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121729999 and 3121730026.

It is not an unprimeable number, because it can be changed into a prime (3121730021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2676716 + ... + 2677881.

It is an arithmetic number, because the mean of its divisors is an integer number (433722438).

Almost surely, 2^3121730051 is an apocalyptic number.

3121730051 is a deficient number, since it is larger than the sum of its proper divisors (348049453).

3121730051 is a wasteful number, since it uses less digits than its factorization.

3121730051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354661.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 3121730051 is about 55872.4444695236. Note that the first 4 decimals coincide. The cubic root of 3121730051 is about 1461.4987503982.

The spelling of 3121730051 in words is "three billion, one hundred twenty-one million, seven hundred thirty thousand, fifty-one".