231470881 has 4 divisors (see below), whose sum is σ = 231628032. Its totient is φ = 231313732.

The previous prime is 231470803. The next prime is 231470887. The reversal of 231470881 is 188074132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231470881 - 2⁷ = 231470753 is a prime.

It is a super-2 number, since 2×231470881² = 107157537501832322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231470887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76345 + ... + 79318.

It is an arithmetic number, because the mean of its divisors is an integer number (57907008).

Almost surely, 2^231470881 is an apocalyptic number.

It is an amenable number.

231470881 is a deficient number, since it is larger than the sum of its proper divisors (157151).

231470881 is a wasteful number, since it uses less digits than its factorization.

231470881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157150.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 231470881 is about 15214.1671148966. The cubic root of 231470881 is about 613.9958770285.

The spelling of 231470881 in words is "two hundred thirty-one million, four hundred seventy thousand, eight hundred eighty-one".