403231001421 has 16 divisors (see below), whose sum is σ = 539453465600. Its totient is φ = 267915817728.

The previous prime is 403231001417. The next prime is 403231001431. The reversal of 403231001421 is 124100132304.

It is not a de Polignac number, because 403231001421 - 2² = 403231001417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403231001431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182585 + ... + 1484913.

It is an arithmetic number, because the mean of its divisors is an integer number (33715841600).

Almost surely, 2^403231001421 is an apocalyptic number.

It is an amenable number.

403231001421 is a deficient number, since it is larger than the sum of its proper divisors (136222464179).

403231001421 is a wasteful number, since it uses less digits than its factorization.

403231001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303828.

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

Adding to 403231001421 its reverse (124100132304), we get a palindrome (527331133725).

The spelling of 403231001421 in words is "four hundred three billion, two hundred thirty-one million, one thousand, four hundred twenty-one".