2532631021 has 4 divisors (see below), whose sum is σ = 2570431552. Its totient is φ = 2494830492.

The previous prime is 2532631009. The next prime is 2532631027. The reversal of 2532631021 is 1201362352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2532631021 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 (2532631027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18900165 + ... + 18900298.

It is an arithmetic number, because the mean of its divisors is an integer number (642607888).

Almost surely, 2^2532631021 is an apocalyptic number.

It is an amenable number.

2532631021 is a deficient number, since it is larger than the sum of its proper divisors (37800531).

2532631021 is an equidigital number, since it uses as much as digits as its factorization.

2532631021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37800530.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2532631021 is about 50325.2523192880. The cubic root of 2532631021 is about 1363.0882496073.

Adding to 2532631021 its reverse (1201362352), we get a palindrome (3733993373).

The spelling of 2532631021 in words is "two billion, five hundred thirty-two million, six hundred thirty-one thousand, twenty-one".