13030031232021 has 16 divisors (see below), whose sum is σ = 18417744283968. Its totient is φ = 8165747616000.

The previous prime is 13030031231981. The next prime is 13030031232131. The reversal of 13030031232021 is 12023213003031.

It is not a de Polignac number, because 13030031232021 - 2¹⁷ = 13030031100949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030031232821) 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, 155555455 + ... + 155639196.

It is an arithmetic number, because the mean of its divisors is an integer number (1151109017748).

Almost surely, 2^{13030031232021} is an apocalyptic number.

It is an amenable number.

13030031232021 is a deficient number, since it is larger than the sum of its proper divisors (5387713051947).

13030031232021 is a wasteful number, since it uses less digits than its factorization.

13030031232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311195492.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13030031232021 its reverse (12023213003031), we get a palindrome (25053244235052).

The spelling of 13030031232021 in words is "thirteen trillion, thirty billion, thirty-one million, two hundred thirty-two thousand, twenty-one".