2070931391 has 4 divisors (see below), whose sum is σ = 2179927800. Its totient is φ = 1961934984.

The previous prime is 2070931363. The next prime is 2070931397. The reversal of 2070931391 is 1931390702.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2070931391 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 (2070931397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54498176 + ... + 54498213.

It is an arithmetic number, because the mean of its divisors is an integer number (544981950).

Almost surely, 2^2070931391 is an apocalyptic number.

2070931391 is a deficient number, since it is larger than the sum of its proper divisors (108996409).

2070931391 is a wasteful number, since it uses less digits than its factorization.

2070931391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108996408.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 2070931391 is about 45507.4871971635. The cubic root of 2070931391 is about 1274.6430149622.

The spelling of 2070931391 in words is "two billion, seventy million, nine hundred thirty-one thousand, three hundred ninety-one".