2091412731 has 8 divisors (see below), whose sum is σ = 2789084944. Its totient is φ = 1394007840.

The previous prime is 2091412727. The next prime is 2091412787. The reversal of 2091412731 is 1372141902.

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

It is not a de Polignac number, because 2091412731 - 2² = 2091412727 is a prime.

It is a super-2 number, since 2×2091412731² = 8748014422777756722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091412711) 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, 47800 + ... + 80421.

It is an arithmetic number, because the mean of its divisors is an integer number (348635618).

Almost surely, 2^2091412731 is an apocalyptic number.

2091412731 is a deficient number, since it is larger than the sum of its proper divisors (697672213).

2091412731 is a wasteful number, since it uses less digits than its factorization.

2091412731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133661.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2091412731 is about 45731.9661834039. The cubic root of 2091412731 is about 1278.8312759357.

The spelling of 2091412731 in words is "two billion, ninety-one million, four hundred twelve thousand, seven hundred thirty-one".