215414332243031 has 4 divisors (see below), whose sum is σ = 217390610520600. Its totient is φ = 213438053965464.

The previous prime is 215414332242947. The next prime is 215414332243043. The reversal of 215414332243031 is 130342233414512.

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 215414332243031 - 2¹⁰ = 215414332242007 is a prime.

It is a super-2 number, since 2×215414332243031² (a number of 29 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 (215414332243931) 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, 988139138621 + ... + 988139138838.

It is an arithmetic number, because the mean of its divisors is an integer number (54347652630150).

Almost surely, 2^{215414332243031} is an apocalyptic number.

215414332243031 is a deficient number, since it is larger than the sum of its proper divisors (1976278277569).

215414332243031 is a wasteful number, since it uses less digits than its factorization.

215414332243031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976278277568.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 215414332243031 its reverse (130342233414512), we get a palindrome (345756565657543).

The spelling of 215414332243031 in words is "two hundred fifteen trillion, four hundred fourteen billion, three hundred thirty-two million, two hundred forty-three thousand, thirty-one".