226665031 has 2 divisors, whose sum is σ = 226665032. Its totient is φ = 226665030.

The previous prime is 226664989. The next prime is 226665053. The reversal of 226665031 is 130566622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 226665031 - 2⁷ = 226664903 is a prime.

It is a super-2 number, since 2×226665031² = 102754072556461922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 226664984 and 226665002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226665091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113332515 + 113332516.

It is an arithmetic number, because the mean of its divisors is an integer number (113332516).

Almost surely, 2^226665031 is an apocalyptic number.

226665031 is a deficient number, since it is larger than the sum of its proper divisors (1).

226665031 is an equidigital number, since it uses as much as digits as its factorization.

226665031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 226665031 is about 15055.3987326806. The cubic root of 226665031 is about 609.7168183029.

The spelling of 226665031 in words is "two hundred twenty-six million, six hundred sixty-five thousand, thirty-one".