313863157 has 2 divisors, whose sum is σ = 313863158. Its totient is φ = 313863156.

The previous prime is 313863113. The next prime is 313863161. The reversal of 313863157 is 751368313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197093521 + 116769636 = 14039^2 + 10806^2 .

It is a cyclic number.

It is not a de Polignac number, because 313863157 - 2²⁷ = 179645429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313863167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156931578 + 156931579.

It is an arithmetic number, because the mean of its divisors is an integer number (156931579).

Almost surely, 2^313863157 is an apocalyptic number.

It is an amenable number.

313863157 is a deficient number, since it is larger than the sum of its proper divisors (1).

313863157 is an equidigital number, since it uses as much as digits as its factorization.

313863157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 313863157 is about 17716.1834772617. The cubic root of 313863157 is about 679.5896868664.

It can be divided in two parts, 31386 and 3157, that added together give a palindrome (34543).

The spelling of 313863157 in words is "three hundred thirteen million, eight hundred sixty-three thousand, one hundred fifty-seven".