331041631 has 4 divisors (see below), whose sum is σ = 331497712. Its totient is φ = 330585552.

The previous prime is 331041619. The next prime is 331041637. The reversal of 331041631 is 136140133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136140133 = 2971 ⋅45823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331041631 is a prime.

It is a super-2 number, since 2×331041631² = 219177122910280322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331041637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226950 + ... + 228403.

It is an arithmetic number, because the mean of its divisors is an integer number (82874428).

Almost surely, 2^331041631 is an apocalyptic number.

331041631 is a deficient number, since it is larger than the sum of its proper divisors (456081).

331041631 is an equidigital number, since it uses as much as digits as its factorization.

331041631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456080.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 331041631 is about 18194.5494860411. The cubic root of 331041631 is about 691.7686412639.

Adding to 331041631 its reverse (136140133), we get a palindrome (467181764).

The spelling of 331041631 in words is "three hundred thirty-one million, forty-one thousand, six hundred thirty-one".