231311322426 has 32 divisors (see below), whose sum is σ = 489858295680. Its totient is φ = 72564916736.

The previous prime is 231311322401. The next prime is 231311322509. The reversal of 231311322426 is 624223113132.

It is a junction number, because it is equal to n+sod(n) for n = 231311322393 and 231311322402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3105715 + ... + 3179321.

It is an arithmetic number, because the mean of its divisors is an integer number (15308071740).

Almost surely, 2^231311322426 is an apocalyptic number.

231311322426 is an abundant number, since it is smaller than the sum of its proper divisors (258546973254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231311322426 is a wasteful number, since it uses less digits than its factorization.

231311322426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104438.

The product of its digits is 10368, while the sum is 30.

Adding to 231311322426 its reverse (624223113132), we get a palindrome (855534435558).

The spelling of 231311322426 in words is "two hundred thirty-one billion, three hundred eleven million, three hundred twenty-two thousand, four hundred twenty-six".