231401335 has 32 divisors (see below), whose sum is σ = 314072640. Its totient is φ = 162201600.

The previous prime is 231401333. The next prime is 231401341. The reversal of 231401335 is 533104132.

It is not a de Polignac number, because 231401335 - 2¹ = 231401333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231401333) 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 31 ways as a sum of consecutive naturals, for example, 200119 + ... + 201271.

It is an arithmetic number, because the mean of its divisors is an integer number (9814770).

Almost surely, 2^231401335 is an apocalyptic number.

231401335 is a deficient number, since it is larger than the sum of its proper divisors (82671305).

231401335 is a wasteful number, since it uses less digits than its factorization.

231401335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 231401335 is about 15211.8813760823. The cubic root of 231401335 is about 613.9343786745.

Adding to 231401335 its reverse (533104132), we get a palindrome (764505467).

The spelling of 231401335 in words is "two hundred thirty-one million, four hundred one thousand, three hundred thirty-five".