231261417 has 12 divisors (see below), whose sum is σ = 337352964. Its totient is φ = 152647200.

The previous prime is 231261397. The next prime is 231261449. The reversal of 231261417 is 714162132.

231261417 is a `hidden beast` number, since 2 + 31 + 2 + 614 + 17 = 666.

231261417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 157025961 + 74235456 = 12531^2 + 8616^2 .

It is not a de Polignac number, because 231261417 - 2¹² = 231257321 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (231261497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126298 + ... + 128115.

It is an arithmetic number, because the mean of its divisors is an integer number (28112747).

Almost surely, 2^231261417 is an apocalyptic number.

It is an amenable number.

231261417 is a deficient number, since it is larger than the sum of its proper divisors (106091547).

231261417 is a wasteful number, since it uses less digits than its factorization.

231261417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254520 (or 254517 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 231261417 is about 15207.2817097600. The cubic root of 231261417 is about 613.8106142062.

The spelling of 231261417 in words is "two hundred thirty-one million, two hundred sixty-one thousand, four hundred seventeen".