491313940330 has 8 divisors (see below), whose sum is σ = 884365092612. Its totient is φ = 196525576128.

The previous prime is 491313940321. The next prime is 491313940333. The reversal of 491313940330 is 33049313194.

It can be written as a sum of positive squares in 2 ways, for example, as 399250850769 + 92063089561 = 631863^2 + 303419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (491313940333) 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, 24565697007 + ... + 24565697026.

Almost surely, 2^491313940330 is an apocalyptic number.

491313940330 is a deficient number, since it is larger than the sum of its proper divisors (393051152282).

491313940330 is a wasteful number, since it uses less digits than its factorization.

491313940330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49131394040.

The product of its (nonzero) digits is 104976, while the sum is 40.

The spelling of 491313940330 in words is "four hundred ninety-one billion, three hundred thirteen million, nine hundred forty thousand, three hundred thirty".