30872141 has 4 divisors (see below), whose sum is σ = 32214432. Its totient is φ = 29529852.

The previous prime is 30872123. The next prime is 30872147. The reversal of 30872141 is 14127803.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30872141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30872141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30872147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671111 + ... + 671156.

It is an arithmetic number, because the mean of its divisors is an integer number (8053608).

Almost surely, 2^30872141 is an apocalyptic number.

It is an amenable number.

30872141 is a deficient number, since it is larger than the sum of its proper divisors (1342291).

30872141 is a wasteful number, since it uses less digits than its factorization.

30872141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342290.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 30872141 is about 5556.2704217847. The cubic root of 30872141 is about 313.7055843117.

Adding to 30872141 its reverse (14127803), we get a palindrome (44999944).

It can be divided in two parts, 30872 and 141, that added together give a palindrome (31013).

The spelling of 30872141 in words is "thirty million, eight hundred seventy-two thousand, one hundred forty-one".