2191431350 has 12 divisors (see below), whose sum is σ = 4076062404. Its totient is φ = 876572520.

The previous prime is 2191431343. The next prime is 2191431379. The reversal of 2191431350 is 531341912.

2191431350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21914264 + ... + 21914363.

It is an arithmetic number, because the mean of its divisors is an integer number (339671867).

Almost surely, 2^2191431350 is an apocalyptic number.

2191431350 is a deficient number, since it is larger than the sum of its proper divisors (1884631054).

2191431350 is a wasteful number, since it uses less digits than its factorization.

2191431350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43828639 (or 43828634 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2191431350 is about 46812.7263679440. The cubic root of 2191431350 is about 1298.9007176497.

The spelling of 2191431350 in words is "two billion, one hundred ninety-one million, four hundred thirty-one thousand, three hundred fifty".