632313021 has 4 divisors (see below), whose sum is σ = 843084032. Its totient is φ = 421542012.

The previous prime is 632312981. The next prime is 632313037. The reversal of 632313021 is 120313236.

632313021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 632313021 - 2¹⁰ = 632311997 is a prime.

It is a super-2 number, since 2×632313021² = 799639513052292882, 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 (632313041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105385501 + ... + 105385506.

It is an arithmetic number, because the mean of its divisors is an integer number (210771008).

Almost surely, 2^632313021 is an apocalyptic number.

It is an amenable number.

632313021 is a deficient number, since it is larger than the sum of its proper divisors (210771011).

632313021 is a wasteful number, since it uses less digits than its factorization.

632313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210771010.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 632313021 is about 25145.8350626898. The cubic root of 632313021 is about 858.3097416794.

Adding to 632313021 its reverse (120313236), we get a palindrome (752626257).

The spelling of 632313021 in words is "six hundred thirty-two million, three hundred thirteen thousand, twenty-one".