2031172789 has 8 divisors (see below), whose sum is σ = 2211804000. Its totient is φ = 1857914352.

The previous prime is 2031172777. The next prime is 2031172837. The reversal of 2031172789 is 9872711302.

It is a happy number.

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 2031172789 - 2¹⁵ = 2031140021 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 (2031172729) 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, 1842619 + ... + 1843720.

It is an arithmetic number, because the mean of its divisors is an integer number (276475500).

Almost surely, 2^2031172789 is an apocalyptic number.

2031172789 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2031172789 is a deficient number, since it is larger than the sum of its proper divisors (180631211).

2031172789 is a wasteful number, since it uses less digits than its factorization.

2031172789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686387.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 2031172789 is about 45068.5343560227. The cubic root of 2031172789 is about 1266.4332079974.

The spelling of 2031172789 in words is "two billion, thirty-one million, one hundred seventy-two thousand, seven hundred eighty-nine".