2031021023213 has 96 divisors (see below), whose sum is σ = 2792872800000. Its totient is φ = 1469865616128.

The previous prime is 2031021023209. The next prime is 2031021023237. The reversal of 2031021023213 is 3123201201302.

It is not a de Polignac number, because 2031021023213 - 2² = 2031021023209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031021023203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31908023 + ... + 31971611.

It is an arithmetic number, because the mean of its divisors is an integer number (29092425000).

Almost surely, 2^{2031021023213} is an apocalyptic number.

It is an amenable number.

2031021023213 is a deficient number, since it is larger than the sum of its proper divisors (761851776787).

2031021023213 is a wasteful number, since it uses less digits than its factorization.

2031021023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63684 (or 63657 counting only the distinct ones).

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

Adding to 2031021023213 its reverse (3123201201302), we get a palindrome (5154222224515).

The spelling of 2031021023213 in words is "two trillion, thirty-one billion, twenty-one million, twenty-three thousand, two hundred thirteen".