2141531 has 4 divisors (see below), whose sum is σ = 2447472. Its totient is φ = 1835592.

The previous prime is 2141519. The next prime is 2141533. The reversal of 2141531 is 1351412.

2141531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2141531 - 2⁶ = 2141467 is a prime.

It is a super-2 number, since 2×2141531² = 9172310047922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2141533) 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 in 3 ways as a sum of consecutive naturals, for example, 152960 + ... + 152973.

It is an arithmetic number, because the mean of its divisors is an integer number (611868).

2^2141531 is an apocalyptic number.

2141531 is a deficient number, since it is larger than the sum of its proper divisors (305941).

2141531 is an equidigital number, since it uses as much as digits as its factorization.

2141531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305940.

The product of its digits is 120, while the sum is 17.

The square root of 2141531 is about 1463.3970753012. The cubic root of 2141531 is about 128.8965980272.

Adding to 2141531 its reverse (1351412), we get a palindrome (3492943).

The spelling of 2141531 in words is "two million, one hundred forty-one thousand, five hundred thirty-one".