30908315381 has 8 divisors (see below), whose sum is σ = 31014689664. Its totient is φ = 30802062240.

The previous prime is 30908315327. The next prime is 30908315429. The reversal of 30908315381 is 18351380903.

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 30908315381 - 2³⁰ = 29834573557 is a prime.

It is a super-2 number, since 2×30908315381² (a number of 22 digits) 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 (30908315881) 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, 496526 + ... + 555296.

It is an arithmetic number, because the mean of its divisors is an integer number (3876836208).

Almost surely, 2^30908315381 is an apocalyptic number.

It is an amenable number.

30908315381 is a deficient number, since it is larger than the sum of its proper divisors (106374283).

30908315381 is a wasteful number, since it uses less digits than its factorization.

30908315381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60571.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 30908315381 in words is "thirty billion, nine hundred eight million, three hundred fifteen thousand, three hundred eighty-one".