21000131401432 has 8 divisors (see below), whose sum is σ = 39375246377700. Its totient is φ = 10500065700712.

The previous prime is 21000131401427. The next prime is 21000131401471. The reversal of 21000131401432 is 23410413100012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312508212582 + ... + 1312508212597.

Almost surely, 2^{21000131401432} is an apocalyptic number.

It is an amenable number.

21000131401432 is a deficient number, since it is larger than the sum of its proper divisors (18375114976268).

21000131401432 is a wasteful number, since it uses less digits than its factorization.

21000131401432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625016425185 (or 2625016425181 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21000131401432 its reverse (23410413100012), we get a palindrome (44410544501444).

The spelling of 21000131401432 in words is "twenty-one trillion, one hundred thirty-one million, four hundred one thousand, four hundred thirty-two".