2152631 has 4 divisors (see below), whose sum is σ = 2318232. Its totient is φ = 1987032.

The previous prime is 2152621. The next prime is 2152637. The reversal of 2152631 is 1362512.

2152631 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 2152631 - 2¹⁰ = 2151607 is a prime.

It is a super-2 number, since 2×2152631² = 9267640444322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152637) 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, 82781 + ... + 82806.

It is an arithmetic number, because the mean of its divisors is an integer number (579558).

2^2152631 is an apocalyptic number.

2152631 is a deficient number, since it is larger than the sum of its proper divisors (165601).

2152631 is a wasteful number, since it uses less digits than its factorization.

2152631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165600.

The product of its digits is 360, while the sum is 20.

The square root of 2152631 is about 1467.1847191134. The cubic root of 2152631 is about 129.1189136463.

The spelling of 2152631 in words is "two million, one hundred fifty-two thousand, six hundred thirty-one".