331213311243 has 12 divisors (see below), whose sum is σ = 483351385608. Its totient is φ = 218532493440.

The previous prime is 331213311239. The next prime is 331213311251. The reversal of 331213311243 is 342113312133.

331213311243 is a `hidden beast` number, since 3 + 312 + 1 + 331 + 12 + 4 + 3 = 666.

It is not a de Polignac number, because 331213311243 - 2² = 331213311239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331213311293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189697473 + ... + 189699218.

It is an arithmetic number, because the mean of its divisors is an integer number (40279282134).

Almost surely, 2^331213311243 is an apocalyptic number.

331213311243 is a deficient number, since it is larger than the sum of its proper divisors (152138074365).

331213311243 is a wasteful number, since it uses less digits than its factorization.

331213311243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379396794 (or 379396791 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 331213311243 its reverse (342113312133), we get a palindrome (673326623376).

The spelling of 331213311243 in words is "three hundred thirty-one billion, two hundred thirteen million, three hundred eleven thousand, two hundred forty-three".