231073481 has 8 divisors (see below), whose sum is σ = 236000520. Its totient is φ = 226167552.

The previous prime is 231073471. The next prime is 231073489. The reversal of 231073481 is 184370132.

It can be written as a sum of positive squares in 4 ways, for example, as 5593225 + 225480256 = 2365^2 + 15016^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 231073481 - 2¹⁴ = 231057097 is a prime.

It is a super-2 number, since 2×231073481² = 106789907242914722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231073489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17915 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (29500065).

Almost surely, 2^231073481 is an apocalyptic number.

It is an amenable number.

231073481 is a deficient number, since it is larger than the sum of its proper divisors (4927039).

231073481 is a wasteful number, since it uses less digits than its factorization.

231073481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 231073481 is about 15201.1013087868. The cubic root of 231073481 is about 613.6442968329.

The spelling of 231073481 in words is "two hundred thirty-one million, seventy-three thousand, four hundred eighty-one".