30215172802231 has 4 divisors (see below), whose sum is σ = 31805445055000. Its totient is φ = 28624900549464.

The previous prime is 30215172802229. The next prime is 30215172802249. The reversal of 30215172802231 is 13220827151203.

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 30215172802231 - 2¹ = 30215172802229 is a prime.

It is a super-2 number, since 2×30215172802231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30215172805231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795136126356 + ... + 795136126393.

It is an arithmetic number, because the mean of its divisors is an integer number (7951361263750).

Almost surely, 2^{30215172802231} is an apocalyptic number.

30215172802231 is a deficient number, since it is larger than the sum of its proper divisors (1590272252769).

30215172802231 is a wasteful number, since it uses less digits than its factorization.

30215172802231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590272252768.

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 30215172802231 its reverse (13220827151203), we get a palindrome (43435999953434).

The spelling of 30215172802231 in words is "thirty trillion, two hundred fifteen billion, one hundred seventy-two million, eight hundred two thousand, two hundred thirty-one".