331630541 has 16 divisors (see below), whose sum is σ = 381825600. Its totient is φ = 284860800.

The previous prime is 331630517. The next prime is 331630601. The reversal of 331630541 is 145036133.

It is a cyclic number.

It is not a de Polignac number, because 331630541 - 2⁶ = 331630477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 331630541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331639541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86105 + ... + 89873.

It is an arithmetic number, because the mean of its divisors is an integer number (23864100).

Almost surely, 2^331630541 is an apocalyptic number.

It is an amenable number.

331630541 is a deficient number, since it is larger than the sum of its proper divisors (50195059).

331630541 is a wasteful number, since it uses less digits than its factorization.

331630541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 331630541 is about 18210.7259877249. The cubic root of 331630541 is about 692.1786079612.

Adding to 331630541 its reverse (145036133), we get a palindrome (476666674).

The spelling of 331630541 in words is "three hundred thirty-one million, six hundred thirty thousand, five hundred forty-one".