197256313 has 2 divisors, whose sum is σ = 197256314. Its totient is φ = 197256312.

The previous prime is 197256277. The next prime is 197256329. The reversal of 197256313 is 313652791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114318864 + 82937449 = 10692^2 + 9107^2 .

It is a cyclic number.

It is not a de Polignac number, because 197256313 - 2⁹ = 197255801 is a prime.

It is not a weakly prime, because it can be changed into another prime (197256373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98628156 + 98628157.

It is an arithmetic number, because the mean of its divisors is an integer number (98628157).

Almost surely, 2^197256313 is an apocalyptic number.

It is an amenable number.

197256313 is a deficient number, since it is larger than the sum of its proper divisors (1).

197256313 is an equidigital number, since it uses as much as digits as its factorization.

197256313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 197256313 is about 14044.7966521413. The cubic root of 197256313 is about 582.1170285008.

It can be divided in two parts, 1972 and 56313, that added together give a palindrome (58285).

The spelling of 197256313 in words is "one hundred ninety-seven million, two hundred fifty-six thousand, three hundred thirteen".