331012132331 has 4 divisors (see below), whose sum is σ = 331090187064. Its totient is φ = 330934077600.

The previous prime is 331012132313. The next prime is 331012132349. The reversal of 331012132331 is 133231210133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133231210133 = 7 ⋅19033030019.

It is an interprime number because it is at equal distance from previous prime (331012132313) and next prime (331012132349).

It is a cyclic number.

It is not a de Polignac number, because 331012132331 - 2¹⁸ = 331011870187 is a prime.

It is a super-2 number, since 2×331012132331² (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 = 331012132297 and 331012132306.

It is not an unprimeable number, because it can be changed into a prime (331012132301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39021005 + ... + 39029486.

It is an arithmetic number, because the mean of its divisors is an integer number (82772546766).

Almost surely, 2^331012132331 is an apocalyptic number.

331012132331 is a deficient number, since it is larger than the sum of its proper divisors (78054733).

331012132331 is an equidigital number, since it uses as much as digits as its factorization.

331012132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78054732.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 331012132331 its reverse (133231210133), we get a palindrome (464243342464).

The spelling of 331012132331 in words is "three hundred thirty-one billion, twelve million, one hundred thirty-two thousand, three hundred thirty-one".