30748794121 has 4 divisors (see below), whose sum is σ = 30865709952. Its totient is φ = 30631878292.

The previous prime is 30748794113. The next prime is 30748794137. The reversal of 30748794121 is 12149784703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12149784703 = 7 ⋅1735683529.

It is a cyclic number.

It is not a de Polignac number, because 30748794121 - 2³ = 30748794113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30748794521) 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, 58457521 + ... + 58458046.

It is an arithmetic number, because the mean of its divisors is an integer number (7716427488).

Almost surely, 2^30748794121 is an apocalyptic number.

It is an amenable number.

30748794121 is a deficient number, since it is larger than the sum of its proper divisors (116915831).

30748794121 is a wasteful number, since it uses less digits than its factorization.

30748794121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116915830.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 30748794121 in words is "thirty billion, seven hundred forty-eight million, seven hundred ninety-four thousand, one hundred twenty-one".