2131021212331 has 8 divisors (see below), whose sum is σ = 2326766689584. Its totient is φ = 1935611781120.

The previous prime is 2131021212323. The next prime is 2131021212367. The reversal of 2131021212331 is 1332121201312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131021212331 - 2³ = 2131021212323 is a prime.

It is a super-2 number, since 2×2131021212331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131021212391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83998246 + ... + 84023611.

It is an arithmetic number, because the mean of its divisors is an integer number (290845836198).

Almost surely, 2^{2131021212331} is an apocalyptic number.

2131021212331 is a deficient number, since it is larger than the sum of its proper divisors (195745477253).

2131021212331 is a wasteful number, since it uses less digits than its factorization.

2131021212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168023021.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2131021212331 its reverse (1332121201312), we get a palindrome (3463142413643).

The spelling of 2131021212331 in words is "two trillion, one hundred thirty-one billion, twenty-one million, two hundred twelve thousand, three hundred thirty-one".