21134031032 has 32 divisors (see below), whose sum is σ = 42372713520. Its totient is φ = 9846950400.

The previous prime is 21134031013. The next prime is 21134031043. The reversal of 21134031032 is 23013043112.

It is a junction number, because it is equal to n+sod(n) for n = 21134030995 and 21134031013.

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, 755558 + ... + 783029.

Almost surely, 2^21134031032 is an apocalyptic number.

It is an amenable number.

21134031032 is an abundant number, since it is smaller than the sum of its proper divisors (21238682488).

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

21134031032 is a wasteful number, since it uses less digits than its factorization.

21134031032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538711 (or 1538707 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21134031032 its reverse (23013043112), we get a palindrome (44147074144).

The spelling of 21134031032 in words is "twenty-one billion, one hundred thirty-four million, thirty-one thousand, thirty-two".