231726628747 has 4 divisors (see below), whose sum is σ = 231758691120. Its totient is φ = 231694566376.

The previous prime is 231726628711. The next prime is 231726628769. The reversal of 231726628747 is 747826627132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231726628747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231726628787) 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, 16020343 + ... + 16034800.

It is an arithmetic number, because the mean of its divisors is an integer number (57939672780).

Almost surely, 2^231726628747 is an apocalyptic number.

231726628747 is a deficient number, since it is larger than the sum of its proper divisors (32062373).

231726628747 is an equidigital number, since it uses as much as digits as its factorization.

231726628747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32062372.

The product of its digits is 9483264, while the sum is 55.

The spelling of 231726628747 in words is "two hundred thirty-one billion, seven hundred twenty-six million, six hundred twenty-eight thousand, seven hundred forty-seven".