331312050442 has 4 divisors (see below), whose sum is σ = 496968075666. Its totient is φ = 165656025220.

The previous prime is 331312050413. The next prime is 331312050449. The reversal of 331312050442 is 244050213133.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 293060905201 + 38251145241 = 541351^2 + 195579^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 331312050442.

It is not an unprimeable number, because it can be changed into a prime (331312050449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82828012609 + ... + 82828012612.

Almost surely, 2^331312050442 is an apocalyptic number.

331312050442 is a deficient number, since it is larger than the sum of its proper divisors (165656025224).

331312050442 is a wasteful number, since it uses less digits than its factorization.

331312050442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165656025223.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 331312050442 its reverse (244050213133), we get a palindrome (575362263575).

The spelling of 331312050442 in words is "three hundred thirty-one billion, three hundred twelve million, fifty thousand, four hundred forty-two".