2105618231 has 2 divisors, whose sum is σ = 2105618232. Its totient is φ = 2105618230.

The previous prime is 2105618183. The next prime is 2105618243. The reversal of 2105618231 is 1328165012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105618231 - 2¹⁴ = 2105601847 is a prime.

It is a super-2 number, since 2×2105618231² = 8867256269439138722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2105618194 and 2105618203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104618231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052809115 + 1052809116.

It is an arithmetic number, because the mean of its divisors is an integer number (1052809116).

Almost surely, 2^2105618231 is an apocalyptic number.

2105618231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105618231 is an equidigital number, since it uses as much as digits as its factorization.

2105618231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2105618231 is about 45887.0159304350. The cubic root of 2105618231 is about 1281.7201464274.

The spelling of 2105618231 in words is "two billion, one hundred five million, six hundred eighteen thousand, two hundred thirty-one".