2031981007 has 8 divisors (see below), whose sum is σ = 2334298016. Its totient is φ = 1732672512.

The previous prime is 2031981001. The next prime is 2031981071. The reversal of 2031981007 is 7001891302.

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 2031981007 - 2¹⁹ = 2031456719 is a prime.

It is the 45078-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031981007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031981001) by changing a digit.

It is a nontrivial repunit in base 45077.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750678 + ... + 753379.

It is an arithmetic number, because the mean of its divisors is an integer number (291787252).

Almost surely, 2^2031981007 is an apocalyptic number.

2031981007 is a deficient number, since it is larger than the sum of its proper divisors (302317009).

2031981007 is a wasteful number, since it uses less digits than its factorization.

2031981007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504257.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 2031981007 is about 45077.5000083190. The cubic root of 2031981007 is about 1266.6011599626.

The spelling of 2031981007 in words is "two billion, thirty-one million, nine hundred eighty-one thousand, seven".