30131321 has 8 divisors (see below), whose sum is σ = 34600800. Its totient is φ = 25950240.

The previous prime is 30131317. The next prime is 30131323. The reversal of 30131321 is 12313103.

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 30131321 - 2² = 30131317 is a prime.

It is a super-3 number, since 3×30131321³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131296 and 30131305.

It is not an unprimeable number, because it can be changed into a prime (30131323) 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, 71876 + ... + 72293.

It is an arithmetic number, because the mean of its divisors is an integer number (4325100).

Almost surely, 2^30131321 is an apocalyptic number.

It is an amenable number.

30131321 is a deficient number, since it is larger than the sum of its proper divisors (4469479).

30131321 is a wasteful number, since it uses less digits than its factorization.

30131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144199.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30131321 is about 5489.2003971435. The cubic root of 30131321 is about 311.1759738579.

Adding to 30131321 its reverse (12313103), we get a palindrome (42444424).

It can be divided in two parts, 3013 and 1321, that added together give a palindrome (4334).

The spelling of 30131321 in words is "thirty million, one hundred thirty-one thousand, three hundred twenty-one".