30320131 has 4 divisors (see below), whose sum is σ = 31139632. Its totient is φ = 29500632.

The previous prime is 30320083. The next prime is 30320137. The reversal of 30320131 is 13102303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30320131 - 2¹¹ = 30318083 is a prime.

It is a super-2 number, since 2×30320131² = 1838620687714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30320137) 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, 409695 + ... + 409768.

It is an arithmetic number, because the mean of its divisors is an integer number (7784908).

Almost surely, 2^30320131 is an apocalyptic number.

30320131 is a deficient number, since it is larger than the sum of its proper divisors (819501).

30320131 is an equidigital number, since it uses as much as digits as its factorization.

30320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819500.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30320131 is about 5506.3718544973. The cubic root of 30320131 is about 311.8245884198.

Adding to 30320131 its reverse (13102303), we get a palindrome (43422434).

The spelling of 30320131 in words is "thirty million, three hundred twenty thousand, one hundred thirty-one".