21415031132 has 24 divisors (see below), whose sum is σ = 40888147440. Its totient is φ = 9732936960.

The previous prime is 21415031083. The next prime is 21415031159. The reversal of 21415031132 is 23113051412.

It is a junction number, because it is equal to n+sod(n) for n = 21415031098 and 21415031107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418868 + ... + 467204.

It is an arithmetic number, because the mean of its divisors is an integer number (1703672810).

Almost surely, 2^21415031132 is an apocalyptic number.

21415031132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21415031132 is a deficient number, since it is larger than the sum of its proper divisors (19473116308).

21415031132 is a wasteful number, since it uses less digits than its factorization.

21415031132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58421 (or 58419 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21415031132 its reverse (23113051412), we get a palindrome (44528082544).

The spelling of 21415031132 in words is "twenty-one billion, four hundred fifteen million, thirty-one thousand, one hundred thirty-two".