20131032021 has 16 divisors (see below), whose sum is σ = 27597550848. Its totient is φ = 13045017600.

The previous prime is 20131032013. The next prime is 20131032041. The reversal of 20131032021 is 12023013102.

It is not a de Polignac number, because 20131032021 - 2³ = 20131032013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131032041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268636 + ... + 335301.

It is an arithmetic number, because the mean of its divisors is an integer number (1724846928).

Almost surely, 2^20131032021 is an apocalyptic number.

It is an amenable number.

20131032021 is a deficient number, since it is larger than the sum of its proper divisors (7466518827).

20131032021 is a wasteful number, since it uses less digits than its factorization.

20131032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604252.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20131032021 its reverse (12023013102), we get a palindrome (32154045123).

The spelling of 20131032021 in words is "twenty billion, one hundred thirty-one million, thirty-two thousand, twenty-one".