231301222331 has 16 divisors (see below), whose sum is σ = 232861698048. Its totient is φ = 229747644000.

The previous prime is 231301222303. The next prime is 231301222357. The reversal of 231301222331 is 133222103132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231301222331 is a prime.

It is a super-2 number, since 2×231301222331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231301222297 and 231301222306.

It is not an unprimeable number, because it can be changed into a prime (231301227331) 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, 212788070 + ... + 212789156.

It is an arithmetic number, because the mean of its divisors is an integer number (14553856128).

Almost surely, 2^231301222331 is an apocalyptic number.

231301222331 is a deficient number, since it is larger than the sum of its proper divisors (1560475717).

231301222331 is a wasteful number, since it uses less digits than its factorization.

231301222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231301222331 its reverse (133222103132), we get a palindrome (364523325463).

The spelling of 231301222331 in words is "two hundred thirty-one billion, three hundred one million, two hundred twenty-two thousand, three hundred thirty-one".