235381813 has 8 divisors (see below), whose sum is σ = 251697240. Its totient is φ = 219340800.

The previous prime is 235381807. The next prime is 235381819. The reversal of 235381813 is 318183532.

It is an interprime number because it is at equal distance from previous prime (235381807) and next prime (235381819).

It can be written as a sum of positive squares in 4 ways, for example, as 75030244 + 160351569 = 8662^2 + 12663^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 235381813 - 2²¹ = 233284661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235381819) 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 in 7 ways as a sum of consecutive naturals, for example, 66828 + ... + 70261.

It is an arithmetic number, because the mean of its divisors is an integer number (31462155).

Almost surely, 2^235381813 is an apocalyptic number.

It is an amenable number.

235381813 is a deficient number, since it is larger than the sum of its proper divisors (16315427).

235381813 is a wasteful number, since it uses less digits than its factorization.

235381813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137207.

The product of its digits is 17280, while the sum is 34.

The square root of 235381813 is about 15342.1580294299. The cubic root of 235381813 is about 617.4346069846.

The spelling of 235381813 in words is "two hundred thirty-five million, three hundred eighty-one thousand, eight hundred thirteen".