3129981207 has 8 divisors (see below), whose sum is σ = 4392956160. Its totient is φ = 1976830200.

The previous prime is 3129981203. The next prime is 3129981229. The reversal of 3129981207 is 7021899213.

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

It is not a de Polignac number, because 3129981207 - 2² = 3129981203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129981203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27455919 + ... + 27456032.

It is an arithmetic number, because the mean of its divisors is an integer number (549119520).

Almost surely, 2^3129981207 is an apocalyptic number.

3129981207 is a deficient number, since it is larger than the sum of its proper divisors (1262974953).

3129981207 is a wasteful number, since it uses less digits than its factorization.

3129981207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54911973.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 3129981207 is about 55946.2349671540. The cubic root of 3129981207 is about 1462.7852640715.

The spelling of 3129981207 in words is "three billion, one hundred twenty-nine million, nine hundred eighty-one thousand, two hundred seven".