2213378131 has 4 divisors (see below), whose sum is σ = 2215885672. Its totient is φ = 2210870592.

The previous prime is 2213378117. The next prime is 2213378201. The reversal of 2213378131 is 1318733122.

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 2213378131 - 2⁵ = 2213378099 is a prime.

It is a super-2 number, since 2×2213378131² = 9798085501578106322, 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 = 2213378093 and 2213378102.

It is not an unprimeable number, because it can be changed into a prime (2213378231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252446 + ... + 1254211.

It is an arithmetic number, because the mean of its divisors is an integer number (553971418).

Almost surely, 2^2213378131 is an apocalyptic number.

2213378131 is a deficient number, since it is larger than the sum of its proper divisors (2507541).

2213378131 is an equidigital number, since it uses as much as digits as its factorization.

2213378131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507540.

The product of its digits is 6048, while the sum is 31.

The square root of 2213378131 is about 47046.5528067679. The cubic root of 2213378131 is about 1303.2224063743. Note that the first 3 decimals are identical.

The spelling of 2213378131 in words is "two billion, two hundred thirteen million, three hundred seventy-eight thousand, one hundred thirty-one".