253422731281 has 2 divisors, whose sum is σ = 253422731282. Its totient is φ = 253422731280.

The previous prime is 253422731249. The next prime is 253422731339. The reversal of 253422731281 is 182137224352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201511210000 + 51911521281 = 448900^2 + 227841^2 .

It is a cyclic number.

It is not a de Polignac number, because 253422731281 - 2⁵ = 253422731249 is a prime.

It is a super-2 number, since 2×253422731281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253422731581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126711365640 + 126711365641.

It is an arithmetic number, because the mean of its divisors is an integer number (126711365641).

Almost surely, 2^253422731281 is an apocalyptic number.

It is an amenable number.

253422731281 is a deficient number, since it is larger than the sum of its proper divisors (1).

253422731281 is an equidigital number, since it uses as much as digits as its factorization.

253422731281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The spelling of 253422731281 in words is "two hundred fifty-three billion, four hundred twenty-two million, seven hundred thirty-one thousand, two hundred eighty-one".