313501450261 has 2 divisors, whose sum is σ = 313501450262. Its totient is φ = 313501450260.

The previous prime is 313501450247. The next prime is 313501450267. The reversal of 313501450261 is 162054105313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312469820100 + 1031630161 = 558990^2 + 32119^2 .

It is a cyclic number.

It is not a de Polignac number, because 313501450261 - 2⁷ = 313501450133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313501450267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156750725130 + 156750725131.

It is an arithmetic number, because the mean of its divisors is an integer number (156750725131).

Almost surely, 2^313501450261 is an apocalyptic number.

It is an amenable number.

313501450261 is a deficient number, since it is larger than the sum of its proper divisors (1).

313501450261 is an equidigital number, since it uses as much as digits as its factorization.

313501450261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 313501450261 its reverse (162054105313), we get a palindrome (475555555574).

The spelling of 313501450261 in words is "three hundred thirteen billion, five hundred one million, four hundred fifty thousand, two hundred sixty-one".