657201047231 has 2 divisors, whose sum is σ = 657201047232. Its totient is φ = 657201047230.

The previous prime is 657201047221. The next prime is 657201047267. The reversal of 657201047231 is 132740102756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 657201047231 - 2²² = 657196852927 is a prime.

It is a super-2 number, since 2×657201047231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657201047201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328600523615 + 328600523616.

It is an arithmetic number, because the mean of its divisors is an integer number (328600523616).

Almost surely, 2^657201047231 is an apocalyptic number.

657201047231 is a deficient number, since it is larger than the sum of its proper divisors (1).

657201047231 is an equidigital number, since it uses as much as digits as its factorization.

657201047231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

Adding to 657201047231 its reverse (132740102756), we get a palindrome (789941149987).

The spelling of 657201047231 in words is "six hundred fifty-seven billion, two hundred one million, forty-seven thousand, two hundred thirty-one".