428354131 has 2 divisors, whose sum is σ = 428354132. Its totient is φ = 428354130.

The previous prime is 428354111. The next prime is 428354153. The reversal of 428354131 is 131453824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428354131 - 2¹¹ = 428352083 is a prime.

It is a super-2 number, since 2×428354131² = 366974523089530322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428354093 and 428354102.

It is not a weakly prime, because it can be changed into another prime (428354111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214177065 + 214177066.

It is an arithmetic number, because the mean of its divisors is an integer number (214177066).

Almost surely, 2^428354131 is an apocalyptic number.

428354131 is a deficient number, since it is larger than the sum of its proper divisors (1).

428354131 is an equidigital number, since it uses as much as digits as its factorization.

428354131 is an evil number, because the sum of its binary digits is even.

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

The square root of 428354131 is about 20696.7178798958. The cubic root of 428354131 is about 753.8199955166.

The spelling of 428354131 in words is "four hundred twenty-eight million, three hundred fifty-four thousand, one hundred thirty-one".