331540601 has 4 divisors (see below), whose sum is σ = 378903552. Its totient is φ = 284177652.

The previous prime is 331540549. The next prime is 331540603. The reversal of 331540601 is 106045133.

It is a happy number.

331540601 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106045133 = 17 ⋅6237949.

It is a cyclic number.

It is not a de Polignac number, because 331540601 - 2¹⁰ = 331539577 is a prime.

It is a super-2 number, since 2×331540601² = 219838340222882402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331540603) 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, 23681465 + ... + 23681478.

It is an arithmetic number, because the mean of its divisors is an integer number (94725888).

Almost surely, 2^331540601 is an apocalyptic number.

It is an amenable number.

331540601 is a deficient number, since it is larger than the sum of its proper divisors (47362951).

331540601 is an equidigital number, since it uses as much as digits as its factorization.

331540601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47362950.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 331540601 is about 18208.2563964812. The cubic root of 331540601 is about 692.1160281070.

Adding to 331540601 its reverse (106045133), we get a palindrome (437585734).

The spelling of 331540601 in words is "three hundred thirty-one million, five hundred forty thousand, six hundred one".