30797121 has 4 divisors (see below), whose sum is σ = 41062832. Its totient is φ = 20531412.

The previous prime is 30797113. The next prime is 30797141. The reversal of 30797121 is 12179703.

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.

It is not a de Polignac number, because 30797121 - 2³ = 30797113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30797111) 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, 5132851 + ... + 5132856.

It is an arithmetic number, because the mean of its divisors is an integer number (10265708).

Almost surely, 2^30797121 is an apocalyptic number.

It is an amenable number.

30797121 is a deficient number, since it is larger than the sum of its proper divisors (10265711).

30797121 is a wasteful number, since it uses less digits than its factorization.

30797121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10265710.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 30797121 is about 5549.5153842475. The cubic root of 30797121 is about 313.4512743220.

The spelling of 30797121 in words is "thirty million, seven hundred ninety-seven thousand, one hundred twenty-one".