2187231983 has 2 divisors, whose sum is σ = 2187231984. Its totient is φ = 2187231982.

The previous prime is 2187231979. The next prime is 2187232031. The reversal of 2187231983 is 3891327812.

2187231983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2187231983 - 2² = 2187231979 is a prime.

It is a super-2 number, since 2×2187231983² = 9567967494916224578, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2187231923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093615991 + 1093615992.

It is an arithmetic number, because the mean of its divisors is an integer number (1093615992).

Almost surely, 2^2187231983 is an apocalyptic number.

2187231983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187231983 is an equidigital number, since it uses as much as digits as its factorization.

2187231983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 2187231983 is about 46767.8520246547. The cubic root of 2187231983 is about 1298.0705070425.

The spelling of 2187231983 in words is "two billion, one hundred eighty-seven million, two hundred thirty-one thousand, nine hundred eighty-three".