235440813 has 8 divisors (see below), whose sum is σ = 320600448. Its totient is φ = 153620864.

The previous prime is 235440809. The next prime is 235440817. The reversal of 235440813 is 318044532.

It is an interprime number because it is at equal distance from previous prime (235440809) and next prime (235440817).

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

It is a cyclic number.

It is not a de Polignac number, because 235440813 - 2² = 235440809 is a prime.

It is a super-2 number, since 2×235440813² = 110864752852201938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235440817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834756 + ... + 835037.

It is an arithmetic number, because the mean of its divisors is an integer number (40075056).

Almost surely, 2^235440813 is an apocalyptic number.

It is an amenable number.

235440813 is a deficient number, since it is larger than the sum of its proper divisors (85159635).

235440813 is a wasteful number, since it uses less digits than its factorization.

235440813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669843.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 235440813 is about 15344.0807153769. The cubic root of 235440813 is about 617.4861906903.

The spelling of 235440813 in words is "two hundred thirty-five million, four hundred forty thousand, eight hundred thirteen".