231234739 has 4 divisors (see below), whose sum is σ = 232786800. Its totient is φ = 229682680.

The previous prime is 231234737. The next prime is 231234767. The reversal of 231234739 is 937432132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231234739 - 2¹ = 231234737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231234737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775807 + ... + 776104.

It is an arithmetic number, because the mean of its divisors is an integer number (58196700).

Almost surely, 2^231234739 is an apocalyptic number.

231234739 is a deficient number, since it is larger than the sum of its proper divisors (1552061).

231234739 is a wasteful number, since it uses less digits than its factorization.

231234739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552060.

The product of its digits is 27216, while the sum is 34.

The square root of 231234739 is about 15206.4045388777. The cubic root of 231234739 is about 613.7870105149.

The spelling of 231234739 in words is "two hundred thirty-one million, two hundred thirty-four thousand, seven hundred thirty-nine".