331131112320031 has 32 divisors (see below), whose sum is σ = 350127394561728. Its totient is φ = 312792064266240.

The previous prime is 331131112320007. The next prime is 331131112320079. The reversal of 331131112320031 is 130023211131133.

It is a cyclic number.

It is not a de Polignac number, because 331131112320031 - 2¹¹ = 331131112317983 is a prime.

It is a super-2 number, since 2×331131112320031² (a number of 30 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 = 331131112319978 and 331131112320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331131112323031) 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, 1172166141 + ... + 1172448601.

It is an arithmetic number, because the mean of its divisors is an integer number (10941481080054).

Almost surely, 2^{331131112320031} is an apocalyptic number.

331131112320031 is a deficient number, since it is larger than the sum of its proper divisors (18996282241697).

331131112320031 is a wasteful number, since it uses less digits than its factorization.

331131112320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288811.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 331131112320031 its reverse (130023211131133), we get a palindrome (461154323451164).

The spelling of 331131112320031 in words is "three hundred thirty-one trillion, one hundred thirty-one billion, one hundred twelve million, three hundred twenty thousand, thirty-one".