331132344481 has 3 divisors (see below), whose sum is σ = 331132919923. Its totient is φ = 331131769040.

The previous prime is 331132344479. The next prime is 331132344539. The reversal of 331132344481 is 184443231133.

The square root of 331132344481 is 575441.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 152575390881 + 178556953600 = 390609^2 + 422560^2 .

It is not a de Polignac number, because 331132344481 - 2¹ = 331132344479 is a prime.

It is a super-2 number, since 2×331132344481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331132344481.

It is not an unprimeable number, because it can be changed into a prime (331132344401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 287721 + ... + 863161.

Almost surely, 2^331132344481 is an apocalyptic number.

331132344481 is the 575441-st square number.

331132344481 is the 287721-st centered octagonal number.

It is an amenable number.

331132344481 is a deficient number, since it is larger than the sum of its proper divisors (575442).

331132344481 is an frugal number, since it uses more digits than its factorization.

331132344481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150882 (or 575441 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The spelling of 331132344481 in words is "three hundred thirty-one billion, one hundred thirty-two million, three hundred forty-four thousand, four hundred eighty-one".