21413131032 has 32 divisors (see below), whose sum is σ = 53741142000. Its totient is φ = 7109935104.

The previous prime is 21413131009. The next prime is 21413131039. The reversal of 21413131032 is 23013131412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413131039) 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 7 ways as a sum of consecutive naturals, for example, 1729657 + ... + 1741992.

Almost surely, 2^21413131032 is an apocalyptic number.

It is an amenable number.

21413131032 is an abundant number, since it is smaller than the sum of its proper divisors (32328010968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21413131032 is a wasteful number, since it uses less digits than its factorization.

21413131032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471915 (or 3471911 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21413131032 its reverse (23013131412), we get a palindrome (44426262444).

The spelling of 21413131032 in words is "twenty-one billion, four hundred thirteen million, one hundred thirty-one thousand, thirty-two".