231303343431 has 16 divisors (see below), whose sum is σ = 314557538400. Its totient is φ = 151131876480.

The previous prime is 231303343421. The next prime is 231303343499. The reversal of 231303343431 is 134343303132.

It is not a de Polignac number, because 231303343431 - 2¹³ = 231303335239 is a prime.

It is a super-2 number, since 2×231303343431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303343421) 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, 623356 + ... + 922593.

It is an arithmetic number, because the mean of its divisors is an integer number (19659846150).

Almost surely, 2^231303343431 is an apocalyptic number.

231303343431 is a deficient number, since it is larger than the sum of its proper divisors (83254194969).

231303343431 is a wasteful number, since it uses less digits than its factorization.

231303343431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546946.

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 231303343431 its reverse (134343303132), we get a palindrome (365646646563).

The spelling of 231303343431 in words is "two hundred thirty-one billion, three hundred three million, three hundred forty-three thousand, four hundred thirty-one".