315300078281 has 2 divisors, whose sum is σ = 315300078282. Its totient is φ = 315300078280.

The previous prime is 315300078271. The next prime is 315300078299. The reversal of 315300078281 is 182870003513.

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., 171267684025 + 144032394256 = 413845^2 + 379516^2 .

It is a cyclic number.

It is not a de Polignac number, because 315300078281 - 2⁶ = 315300078217 is a prime.

It is a super-2 number, since 2×315300078281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315300078211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157650039140 + 157650039141.

It is an arithmetic number, because the mean of its divisors is an integer number (157650039141).

Almost surely, 2^315300078281 is an apocalyptic number.

It is an amenable number.

315300078281 is a deficient number, since it is larger than the sum of its proper divisors (1).

315300078281 is an equidigital number, since it uses as much as digits as its factorization.

315300078281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 315300078281 in words is "three hundred fifteen billion, three hundred million, seventy-eight thousand, two hundred eighty-one".