65226431 has 2 divisors, whose sum is σ = 65226432. Its totient is φ = 65226430.

The previous prime is 65226397. The next prime is 65226461. The reversal of 65226431 is 13462256.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65226431 is a prime.

It is a super-2 number, since 2×65226431² = 8508974601995522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65226394 and 65226403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65226461) 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, 32613215 + 32613216.

It is an arithmetic number, because the mean of its divisors is an integer number (32613216).

Almost surely, 2^65226431 is an apocalyptic number.

65226431 is a deficient number, since it is larger than the sum of its proper divisors (1).

65226431 is an equidigital number, since it uses as much as digits as its factorization.

65226431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 65226431 is about 8076.2881944616. The cubic root of 65226431 is about 402.5389152606.

Adding to 65226431 its reverse (13462256), we get a palindrome (78688687).

The spelling of 65226431 in words is "sixty-five million, two hundred twenty-six thousand, four hundred thirty-one".