215104404631 has 8 divisors (see below), whose sum is σ = 216546876000. Its totient is φ = 213662169600.

The previous prime is 215104404629. The next prime is 215104404679. The reversal of 215104404631 is 136404401512.

215104404631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 215104404631 - 2¹ = 215104404629 is a prime.

It is a super-2 number, since 2×215104404631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215104404593 and 215104404602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215104404611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008815 + ... + 2113183.

It is an arithmetic number, because the mean of its divisors is an integer number (27068359500).

Almost surely, 2^215104404631 is an apocalyptic number.

215104404631 is a deficient number, since it is larger than the sum of its proper divisors (1442471369).

215104404631 is a wasteful number, since it uses less digits than its factorization.

215104404631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118169.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 215104404631 in words is "two hundred fifteen billion, one hundred four million, four hundred four thousand, six hundred thirty-one".