228470131 has 2 divisors, whose sum is σ = 228470132. Its totient is φ = 228470130.

The previous prime is 228470129. The next prime is 228470147. The reversal of 228470131 is 131074822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228470131 - 2¹ = 228470129 is a prime.

It is a super-2 number, since 2×228470131² = 104397201518314322, which contains 22 as substring.

Together with 228470129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 228470131.

It is not a weakly prime, because it can be changed into another prime (228470101) 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 as a sum of consecutive naturals, namely, 114235065 + 114235066.

It is an arithmetic number, because the mean of its divisors is an integer number (114235066).

Almost surely, 2^228470131 is an apocalyptic number.

228470131 is a deficient number, since it is larger than the sum of its proper divisors (1).

228470131 is an equidigital number, since it uses as much as digits as its factorization.

228470131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 228470131 is about 15115.2284468347. The cubic root of 228470131 is about 611.3310815085.

The spelling of 228470131 in words is "two hundred twenty-eight million, four hundred seventy thousand, one hundred thirty-one".