231401435 has 4 divisors (see below), whose sum is σ = 277681728. Its totient is φ = 185121144.

The previous prime is 231401431. The next prime is 231401449. The reversal of 231401435 is 534104132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231401435 - 2² = 231401431 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 231401435.

It is not an unprimeable number, because it can be changed into a prime (231401431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23140139 + ... + 23140148.

It is an arithmetic number, because the mean of its divisors is an integer number (69420432).

Almost surely, 2^231401435 is an apocalyptic number.

231401435 is a deficient number, since it is larger than the sum of its proper divisors (46280293).

231401435 is an equidigital number, since it uses as much as digits as its factorization.

231401435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46280292.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 231401435 is about 15211.8846629864. The cubic root of 231401435 is about 613.9344671117.

Adding to 231401435 its reverse (534104132), we get a palindrome (765505567).

The spelling of 231401435 in words is "two hundred thirty-one million, four hundred one thousand, four hundred thirty-five".