226128031 has 4 divisors (see below), whose sum is σ = 226520512. Its totient is φ = 225735552.

The previous prime is 226127969. The next prime is 226128047. The reversal of 226128031 is 130821622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130821622 = 2 ⋅65410811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226128031 is a prime.

It is a super-2 number, since 2×226128031² = 102267772807873922, 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 = 226127987 and 226128005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226123031) 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, 195375 + ... + 196528.

It is an arithmetic number, because the mean of its divisors is an integer number (56630128).

Almost surely, 2^226128031 is an apocalyptic number.

226128031 is a deficient number, since it is larger than the sum of its proper divisors (392481).

226128031 is an equidigital number, since it uses as much as digits as its factorization.

226128031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392480.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 226128031 is about 15037.5540231781. The cubic root of 226128031 is about 609.2349371226.

Adding to 226128031 its reverse (130821622), we get a palindrome (356949653).

The spelling of 226128031 in words is "two hundred twenty-six million, one hundred twenty-eight thousand, thirty-one".