31304324231 has 8 divisors (see below), whose sum is σ = 31898126160. Its totient is φ = 30710639232.

The previous prime is 31304324167. The next prime is 31304324243. The reversal of 31304324231 is 13242340313.

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 31304324231 - 2⁶ = 31304324167 is a prime.

It is a super-2 number, since 2×31304324231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31304324231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304324431) 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, 666776 + ... + 712178.

It is an arithmetic number, because the mean of its divisors is an integer number (3987265770).

Almost surely, 2^31304324231 is an apocalyptic number.

31304324231 is a deficient number, since it is larger than the sum of its proper divisors (593801929).

31304324231 is a wasteful number, since it uses less digits than its factorization.

31304324231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58465.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31304324231 its reverse (13242340313), we get a palindrome (44546664544).

The spelling of 31304324231 in words is "thirty-one billion, three hundred four million, three hundred twenty-four thousand, two hundred thirty-one".