331445531441 has 4 divisors (see below), whose sum is σ = 331494735972. Its totient is φ = 331396326912.

The previous prime is 331445531437. The next prime is 331445531471. The reversal of 331445531441 is 144135544133.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52102627600 + 279342903841 = 228260^2 + 528529^2 .

It is a cyclic number.

It is not a de Polignac number, because 331445531441 - 2² = 331445531437 is a prime.

It is a super-2 number, since 2×331445531441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331445531395 and 331445531404.

It is not an unprimeable number, because it can be changed into a prime (331445531411) 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, 24592160 + ... + 24605633.

It is an arithmetic number, because the mean of its divisors is an integer number (82873683993).

Almost surely, 2^331445531441 is an apocalyptic number.

It is an amenable number.

331445531441 is a deficient number, since it is larger than the sum of its proper divisors (49204531).

331445531441 is an equidigital number, since it uses as much as digits as its factorization.

331445531441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49204530.

The product of its digits is 172800, while the sum is 38.

The spelling of 331445531441 in words is "three hundred thirty-one billion, four hundred forty-five million, five hundred thirty-one thousand, four hundred forty-one".