2112671391 has 16 divisors (see below), whose sum is σ = 2846782464. Its totient is φ = 1393547904.

The previous prime is 2112671369. The next prime is 2112671423. The reversal of 2112671391 is 1931762112.

It is not a de Polignac number, because 2112671391 - 2¹³ = 2112663199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112671321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200640 + ... + 210906.

It is an arithmetic number, because the mean of its divisors is an integer number (177923904).

Almost surely, 2^2112671391 is an apocalyptic number.

2112671391 is a deficient number, since it is larger than the sum of its proper divisors (734111073).

2112671391 is a wasteful number, since it uses less digits than its factorization.

2112671391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990.

The product of its digits is 4536, while the sum is 33.

The square root of 2112671391 is about 45963.8052275919. The cubic root of 2112671391 is about 1283.1496714886.

The spelling of 2112671391 in words is "two billion, one hundred twelve million, six hundred seventy-one thousand, three hundred ninety-one".