2921231 has 4 divisors (see below), whose sum is σ = 3075000. Its totient is φ = 2767464.

The previous prime is 2921227. The next prime is 2921239. The reversal of 2921231 is 1321292.

2921231 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 not a de Polignac number, because 2921231 - 2² = 2921227 is a prime.

It is a super-2 number, since 2×2921231² = 17067181110722, 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 (2921239) 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, 76856 + ... + 76893.

It is an arithmetic number, because the mean of its divisors is an integer number (768750).

2^2921231 is an apocalyptic number.

2921231 is a deficient number, since it is larger than the sum of its proper divisors (153769).

2921231 is a wasteful number, since it uses less digits than its factorization.

2921231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153768.

The product of its digits is 216, while the sum is 20.

The square root of 2921231 is about 1709.1609052398. The cubic root of 2921231 is about 142.9514726043.

The spelling of 2921231 in words is "two million, nine hundred twenty-one thousand, two hundred thirty-one".