2021650231 has 2 divisors, whose sum is σ = 2021650232. Its totient is φ = 2021650230.

The previous prime is 2021650177. The next prime is 2021650249. The reversal of 2021650231 is 1320561202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021650231 - 2²³ = 2013261623 is a prime.

It is a super-2 number, since 2×2021650231² = 8174139313004706722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021450231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010825115 + 1010825116.

It is an arithmetic number, because the mean of its divisors is an integer number (1010825116).

Almost surely, 2^2021650231 is an apocalyptic number.

2021650231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021650231 is an equidigital number, since it uses as much as digits as its factorization.

2021650231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2021650231 is about 44962.7649394474. The cubic root of 2021650231 is about 1264.4510068641.

The spelling of 2021650231 in words is "two billion, twenty-one million, six hundred fifty thousand, two hundred thirty-one".