231226739 has 2 divisors, whose sum is σ = 231226740. Its totient is φ = 231226738.

The previous prime is 231226733. The next prime is 231226769. The reversal of 231226739 is 937622132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231226739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231226699 and 231226708.

It is not a weakly prime, because it can be changed into another prime (231226733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115613369 + 115613370.

It is an arithmetic number, because the mean of its divisors is an integer number (115613370).

Almost surely, 2^231226739 is an apocalyptic number.

231226739 is a deficient number, since it is larger than the sum of its proper divisors (1).

231226739 is an equidigital number, since it uses as much as digits as its factorization.

231226739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 231226739 is about 15206.1414895430. The cubic root of 231226739 is about 613.7799320619.

The spelling of 231226739 in words is "two hundred thirty-one million, two hundred twenty-six thousand, seven hundred thirty-nine".