235742513 has 4 divisors (see below), whose sum is σ = 235773540. Its totient is φ = 235711488.

The previous prime is 235742509. The next prime is 235742531. The reversal of 235742513 is 315247532.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 56370064 + 179372449 = 7508^2 + 13393^2 .

It is a cyclic number.

It is not a de Polignac number, because 235742513 - 2² = 235742509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 235742513.

It is not an unprimeable number, because it can be changed into a prime (235742543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4433 + ... + 22161.

It is an arithmetic number, because the mean of its divisors is an integer number (58943385).

It is a Poulet number, since it divides 2^235742512-1.

Almost surely, 2^235742513 is an apocalyptic number.

It is an amenable number.

235742513 is a deficient number, since it is larger than the sum of its proper divisors (31027).

235742513 is a wasteful number, since it uses less digits than its factorization.

235742513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31026.

The product of its digits is 25200, while the sum is 32.

The square root of 235742513 is about 15353.9087205832. The cubic root of 235742513 is about 617.7498324145.

The spelling of 235742513 in words is "two hundred thirty-five million, seven hundred forty-two thousand, five hundred thirteen".