331245231601 has 4 divisors (see below), whose sum is σ = 331310429604. Its totient is φ = 331180033600.

The previous prime is 331245231529. The next prime is 331245231613. The reversal of 331245231601 is 106132542133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106132542133 = 48611 ⋅2183303.

It can be written as a sum of positive squares in 2 ways, for example, as 77253423025 + 253991808576 = 277945^2 + 503976^2 .

It is a cyclic number.

It is not a de Polignac number, because 331245231601 - 2¹³ = 331245223409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331245231661) 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, 32591380 + ... + 32601541.

It is an arithmetic number, because the mean of its divisors is an integer number (82827607401).

Almost surely, 2^331245231601 is an apocalyptic number.

It is an amenable number.

331245231601 is a deficient number, since it is larger than the sum of its proper divisors (65198003).

331245231601 is an equidigital number, since it uses as much as digits as its factorization.

331245231601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65198002.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 331245231601 its reverse (106132542133), we get a palindrome (437377773734).

The spelling of 331245231601 in words is "three hundred thirty-one billion, two hundred forty-five million, two hundred thirty-one thousand, six hundred one".