21031143132 has 48 divisors (see below), whose sum is σ = 51020211200. Its totient is φ = 6735415680.

The previous prime is 21031143097. The next prime is 21031143181. The reversal of 21031143132 is 23134113012.

It is a junction number, because it is equal to n+sod(n) for n = 21031143099 and 21031143108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151657 + ... + 255072.

Almost surely, 2^21031143132 is an apocalyptic number.

It is an amenable number.

21031143132 is an abundant number, since it is smaller than the sum of its proper divisors (29989068068).

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

21031143132 is a wasteful number, since it uses less digits than its factorization.

21031143132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406906 (or 406904 counting only the distinct ones).

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

Adding to 21031143132 its reverse (23134113012), we get a palindrome (44165256144).

The spelling of 21031143132 in words is "twenty-one billion, thirty-one million, one hundred forty-three thousand, one hundred thirty-two".