331144344133402 has 8 divisors (see below), whose sum is σ = 496721875205556. Its totient is φ = 165570385731552.

The previous prime is 331144344133363. The next prime is 331144344133403. The reversal of 331144344133402 is 204331443441133.

It can be written as a sum of positive squares in 2 ways, for example, as 221226921942601 + 109917422190801 = 14873699^2 + 10484151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (331144344133403) 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, 892935843 + ... + 893306614.

Almost surely, 2^{331144344133402} is an apocalyptic number.

331144344133402 is a deficient number, since it is larger than the sum of its proper divisors (165577531072154).

331144344133402 is a wasteful number, since it uses less digits than its factorization.

331144344133402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786335152.

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 331144344133402 its reverse (204331443441133), we get a palindrome (535475787574535).

The spelling of 331144344133402 in words is "three hundred thirty-one trillion, one hundred forty-four billion, three hundred forty-four million, one hundred thirty-three thousand, four hundred two".