30881478491 has 8 divisors (see below), whose sum is σ = 31043500800. Its totient is φ = 30719524968.

The previous prime is 30881478409. The next prime is 30881478497. The reversal of 30881478491 is 19487418803.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30881478491 - 2²² = 30877284187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30881478497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057610 + ... + 1086416.

It is an arithmetic number, because the mean of its divisors is an integer number (3880437600).

Almost surely, 2^30881478491 is an apocalyptic number.

30881478491 is a deficient number, since it is larger than the sum of its proper divisors (162022309).

30881478491 is a wasteful number, since it uses less digits than its factorization.

30881478491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34393.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 30881478491 in words is "thirty billion, eight hundred eighty-one million, four hundred seventy-eight thousand, four hundred ninety-one".