21031032130 has 16 divisors (see below), whose sum is σ = 38144836224. Its totient is φ = 8348195440.

The previous prime is 21031032119. The next prime is 21031032157. The reversal of 21031032130 is 3123013012.

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, 8025802 + ... + 8028421.

It is an arithmetic number, because the mean of its divisors is an integer number (2384052264).

Almost surely, 2^21031032130 is an apocalyptic number.

21031032130 is a deficient number, since it is larger than the sum of its proper divisors (17113804094).

21031032130 is a wasteful number, since it uses less digits than its factorization.

21031032130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16054361.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21031032130 its reverse (3123013012), we get a palindrome (24154045142).

The spelling of 21031032130 in words is "twenty-one billion, thirty-one million, thirty-two thousand, one hundred thirty".