231345284749 has 2 divisors, whose sum is σ = 231345284750. Its totient is φ = 231345284748.

The previous prime is 231345284707. The next prime is 231345284801. The reversal of 231345284749 is 947482543132.

It is an a-pointer prime, because the next prime (231345284801) can be obtained adding 231345284749 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156839760900 + 74505523849 = 396030^2 + 272957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231345284749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231345284696 and 231345284705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231345284249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115672642374 + 115672642375.

It is an arithmetic number, because the mean of its divisors is an integer number (115672642375).

Almost surely, 2^231345284749 is an apocalyptic number.

It is an amenable number.

231345284749 is a deficient number, since it is larger than the sum of its proper divisors (1).

231345284749 is an equidigital number, since it uses as much as digits as its factorization.

231345284749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 52.

The spelling of 231345284749 in words is "two hundred thirty-one billion, three hundred forty-five million, two hundred eighty-four thousand, seven hundred forty-nine".