231030131212321 has 32 divisors (see below), whose sum is σ = 281589683090688. Its totient is φ = 185399424322560.

The previous prime is 231030131212319. The next prime is 231030131212427. The reversal of 231030131212321 is 123212131030132.

It is not a de Polignac number, because 231030131212321 - 2¹ = 231030131212319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231030131212301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148240555 + ... + 149790928.

It is an arithmetic number, because the mean of its divisors is an integer number (8799677596584).

Almost surely, 2^{231030131212321} is an apocalyptic number.

It is an amenable number.

231030131212321 is a deficient number, since it is larger than the sum of its proper divisors (50559551878367).

231030131212321 is a wasteful number, since it uses less digits than its factorization.

231030131212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298031641.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231030131212321 its reverse (123212131030132), we get a palindrome (354242262242453).

The spelling of 231030131212321 in words is "two hundred thirty-one trillion, thirty billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twenty-one".