464031021 has 4 divisors (see below), whose sum is σ = 618708032. Its totient is φ = 309354012.

The previous prime is 464031013. The next prime is 464031037. The reversal of 464031021 is 120130464.

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 464031021 - 2³ = 464031013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464031011) 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, 77338501 + ... + 77338506.

It is an arithmetic number, because the mean of its divisors is an integer number (154677008).

Almost surely, 2^464031021 is an apocalyptic number.

It is an amenable number.

464031021 is a deficient number, since it is larger than the sum of its proper divisors (154677011).

464031021 is a wasteful number, since it uses less digits than its factorization.

464031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154677010.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 464031021 is about 21541.3792733892. The cubic root of 464031021 is about 774.1925803940.

Adding to 464031021 its reverse (120130464), we get a palindrome (584161485).

The spelling of 464031021 in words is "four hundred sixty-four million, thirty-one thousand, twenty-one".