331010421 has 16 divisors (see below), whose sum is σ = 505148928. Its totient is φ = 188866800.

The previous prime is 331010401. The next prime is 331010423. The reversal of 331010421 is 124010133.

It is not a de Polignac number, because 331010421 - 2⁶ = 331010357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331010421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331010423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3106 + ... + 25916.

It is an arithmetic number, because the mean of its divisors is an integer number (31571808).

Almost surely, 2^331010421 is an apocalyptic number.

It is an amenable number.

331010421 is a deficient number, since it is larger than the sum of its proper divisors (174138507).

331010421 is a wasteful number, since it uses less digits than its factorization.

331010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23512.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 331010421 is about 18193.6917913875. The cubic root of 331010421 is about 691.7469010196.

Adding to 331010421 its reverse (124010133), we get a palindrome (455020554).

It can be divided in two parts, 3310 and 10421, that added together give a palindrome (13731).

The spelling of 331010421 in words is "three hundred thirty-one million, ten thousand, four hundred twenty-one".