730031121 has 12 divisors (see below), whose sum is σ = 1088505600. Its totient is φ = 470987640.

The previous prime is 730031111. The next prime is 730031177. The reversal of 730031121 is 121130037.

It is not a de Polignac number, because 730031121 - 2⁵ = 730031089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 730031094 and 730031103.

It is not an unprimeable number, because it can be changed into a prime (730031111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1308021 + ... + 1308578.

It is an arithmetic number, because the mean of its divisors is an integer number (90708800).

Almost surely, 2^730031121 is an apocalyptic number.

It is an amenable number.

730031121 is a deficient number, since it is larger than the sum of its proper divisors (358474479).

730031121 is a wasteful number, since it uses less digits than its factorization.

730031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616636 (or 2616633 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 730031121 is about 27019.0880860180. The cubic root of 730031121 is about 900.4241297249.

Adding to 730031121 its reverse (121130037), we get a palindrome (851161158).

The spelling of 730031121 in words is "seven hundred thirty million, thirty-one thousand, one hundred twenty-one".