2131535 has 8 divisors (see below), whose sum is σ = 2923296. Its totient is φ = 1461600.

The previous prime is 2131531. The next prime is 2131537. The reversal of 2131535 is 5351312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131535 - 2² = 2131531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30416 + ... + 30485.

It is an arithmetic number, because the mean of its divisors is an integer number (365412).

2^2131535 is an apocalyptic number.

2131535 is a deficient number, since it is larger than the sum of its proper divisors (791761).

2131535 is an equidigital number, since it uses as much as digits as its factorization.

2131535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60913.

The product of its digits is 450, while the sum is 20.

The square root of 2131535 is about 1459.9777395563. The cubic root of 2131535 is about 128.6957354506.

Adding to 2131535 its reverse (5351312), we get a palindrome (7482847).

The spelling of 2131535 in words is "two million, one hundred thirty-one thousand, five hundred thirty-five".