65147231 has 2 divisors, whose sum is σ = 65147232. Its totient is φ = 65147230.

The previous prime is 65147189. The next prime is 65147239. The reversal of 65147231 is 13274156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65147231 - 2⁶ = 65147167 is a prime.

It is a super-2 number, since 2×65147231² = 8488323413934722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65147194 and 65147203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65147239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32573615 + 32573616.

It is an arithmetic number, because the mean of its divisors is an integer number (32573616).

Almost surely, 2^65147231 is an apocalyptic number.

65147231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65147231 is an equidigital number, since it uses as much as digits as its factorization.

65147231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 65147231 is about 8071.3834625794. The cubic root of 65147231 is about 402.3759241030.

The spelling of 65147231 in words is "sixty-five million, one hundred forty-seven thousand, two hundred thirty-one".