231401481 has 8 divisors (see below), whose sum is σ = 313764960. Its totient is φ = 151652832.

The previous prime is 231401449. The next prime is 231401497. The reversal of 231401481 is 184104132.

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

It is not a de Polignac number, because 231401481 - 2⁵ = 231401449 is a prime.

It is a super-2 number, since 2×231401481² = 107093290817986722, which contains 22 as substring.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653500 + ... + 653853.

It is an arithmetic number, because the mean of its divisors is an integer number (39220620).

Almost surely, 2^231401481 is an apocalyptic number.

It is an amenable number.

231401481 is a deficient number, since it is larger than the sum of its proper divisors (82363479).

231401481 is a wasteful number, since it uses less digits than its factorization.

231401481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307415.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 231401481 is about 15211.8861749620. The cubic root of 231401481 is about 613.9345077928.

The spelling of 231401481 in words is "two hundred thirty-one million, four hundred one thousand, four hundred eighty-one".