331230321634 has 4 divisors (see below), whose sum is σ = 496845482454. Its totient is φ = 165615160816.

The previous prime is 331230321593. The next prime is 331230321727. The reversal of 331230321634 is 436123032133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436123032133 = 57859 ⋅7537687.

It can be written as a sum of positive squares in only one way, i.e., 190098616009 + 141131705625 = 436003^2 + 375675^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331230321596 and 331230321605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82807580407 + ... + 82807580410.

Almost surely, 2^331230321634 is an apocalyptic number.

331230321634 is a deficient number, since it is larger than the sum of its proper divisors (165615160820).

331230321634 is a wasteful number, since it uses less digits than its factorization.

331230321634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165615160819.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 331230321634 its reverse (436123032133), we get a palindrome (767353353767).

It can be divided in two parts, 331230 and 321634, that added together give a square (652864 = 808²).

The spelling of 331230321634 in words is "three hundred thirty-one billion, two hundred thirty million, three hundred twenty-one thousand, six hundred thirty-four".