238102313 has 2 divisors, whose sum is σ = 238102314. Its totient is φ = 238102312.

The previous prime is 238102261. The next prime is 238102339. The reversal of 238102313 is 313201832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226562704 + 11539609 = 15052^2 + 3397^2 .

It is a cyclic number.

It is not a de Polignac number, because 238102313 - 2⁸ = 238102057 is a prime.

It is a super-2 number, since 2×238102313² = 113385422911899938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238102373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119051156 + 119051157.

It is an arithmetic number, because the mean of its divisors is an integer number (119051157).

Almost surely, 2^238102313 is an apocalyptic number.

It is an amenable number.

238102313 is a deficient number, since it is larger than the sum of its proper divisors (1).

238102313 is an equidigital number, since it uses as much as digits as its factorization.

238102313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 238102313 is about 15430.5642476223. The cubic root of 238102313 is about 619.8042331978.

The spelling of 238102313 in words is "two hundred thirty-eight million, one hundred two thousand, three hundred thirteen".