231434109 has 6 divisors (see below), whose sum is σ = 334293726. Its totient is φ = 154289400.

The previous prime is 231434089. The next prime is 231434113. The reversal of 231434109 is 901434132.

231434109 is a `hidden beast` number, since 2 + 314 + 341 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118330884 + 113103225 = 10878^2 + 10635^2 .

It is not a de Polignac number, because 231434109 - 2¹³ = 231425917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231434179) 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 5 ways as a sum of consecutive naturals, for example, 12857442 + ... + 12857459.

It is an arithmetic number, because the mean of its divisors is an integer number (55715621).

Almost surely, 2^231434109 is an apocalyptic number.

It is an amenable number.

231434109 is a deficient number, since it is larger than the sum of its proper divisors (102859617).

231434109 is a wasteful number, since it uses less digits than its factorization.

231434109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714907 (or 25714904 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 231434109 is about 15212.9585879933. The cubic root of 231434109 is about 613.9633617045.

The spelling of 231434109 in words is "two hundred thirty-one million, four hundred thirty-four thousand, one hundred nine".