2179946231 has 4 divisors (see below), whose sum is σ = 2181417672. Its totient is φ = 2178474792.

The previous prime is 2179946213. The next prime is 2179946239. The reversal of 2179946231 is 1326499712.

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

It is a cyclic number.

It is not a de Polignac number, because 2179946231 - 2¹⁴ = 2179929847 is a prime.

It is a super-2 number, since 2×2179946231² = 9504331140102210722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179946239) 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, 733496 + ... + 736461.

It is an arithmetic number, because the mean of its divisors is an integer number (545354418).

Almost surely, 2^2179946231 is an apocalyptic number.

2179946231 is a deficient number, since it is larger than the sum of its proper divisors (1471441).

2179946231 is a wasteful number, since it uses less digits than its factorization.

2179946231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471440.

The product of its digits is 163296, while the sum is 44.

The square root of 2179946231 is about 46689.8943134379. The cubic root of 2179946231 is about 1296.6275964978.

The spelling of 2179946231 in words is "two billion, one hundred seventy-nine million, nine hundred forty-six thousand, two hundred thirty-one".