219400131 has 8 divisors (see below), whose sum is σ = 294471424. Its totient is φ = 145297800.

The previous prime is 219400127. The next prime is 219400169. The reversal of 219400131 is 131004912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 219400131 - 2² = 219400127 is a prime.

It is a super-2 number, since 2×219400131² = 96272834965634322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219400098 and 219400107.

It is not an unprimeable number, because it can be changed into a prime (219400171) 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, 241711 + ... + 242616.

It is an arithmetic number, because the mean of its divisors is an integer number (36808928).

Almost surely, 2^219400131 is an apocalyptic number.

219400131 is a deficient number, since it is larger than the sum of its proper divisors (75071293).

219400131 is a wasteful number, since it uses less digits than its factorization.

219400131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484481.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 219400131 is about 14812.1615910710. The cubic root of 219400131 is about 603.1318930763.

The spelling of 219400131 in words is "two hundred nineteen million, four hundred thousand, one hundred thirty-one".