2119531 has 2 divisors, whose sum is σ = 2119532. Its totient is φ = 2119530.

The previous prime is 2119511. The next prime is 2119561. The reversal of 2119531 is 1359112.

2119531 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 a de Polignac number, because none of the positive numbers 2^k-2119531 is a prime.

It is a super-2 number, since 2×2119531² = 8984823319922, which contains 22 as substring.

2119531 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2119511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059765 + 1059766.

It is an arithmetic number, because the mean of its divisors is an integer number (1059766).

2^2119531 is an apocalyptic number.

2119531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119531 is an equidigital number, since it uses as much as digits as its factorization.

2119531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 2119531 is about 1455.8609136865. The cubic root of 2119531 is about 128.4536919240.

The spelling of 2119531 in words is "two million, one hundred nineteen thousand, five hundred thirty-one".