3121345007 has 8 divisors (see below), whose sum is σ = 3411223632. Its totient is φ = 2832486400.

The previous prime is 3121344983. The next prime is 3121345039. The reversal of 3121345007 is 7005431213.

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

It is a cyclic number.

It is not a de Polignac number, because 3121345007 - 2¹⁶ = 3121279471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121345067) 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, 248594 + ... + 260847.

It is an arithmetic number, because the mean of its divisors is an integer number (426402954).

Almost surely, 2^3121345007 is an apocalyptic number.

3121345007 is a deficient number, since it is larger than the sum of its proper divisors (289878625).

3121345007 is a wasteful number, since it uses less digits than its factorization.

3121345007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510009.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 3121345007 is about 55868.9986217759. The cubic root of 3121345007 is about 1461.4386593105.

The spelling of 3121345007 in words is "three billion, one hundred twenty-one million, three hundred forty-five thousand, seven".