231402461 has 8 divisors (see below), whose sum is σ = 234621024. Its totient is φ = 228206160.

The previous prime is 231402427. The next prime is 231402467. The reversal of 231402461 is 164204132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231402461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231402467) 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 7 ways as a sum of consecutive naturals, for example, 15935 + ... + 26771.

It is an arithmetic number, because the mean of its divisors is an integer number (29327628).

Almost surely, 2^231402461 is an apocalyptic number.

It is an amenable number.

231402461 is a deficient number, since it is larger than the sum of its proper divisors (3218563).

231402461 is a wasteful number, since it uses less digits than its factorization.

231402461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 231402461 is about 15211.9183865810. The cubic root of 231402461 is about 613.9353744754.

Adding to 231402461 its reverse (164204132), we get a palindrome (395606593).

The spelling of 231402461 in words is "two hundred thirty-one million, four hundred two thousand, four hundred sixty-one".