113031020257 has 2 divisors, whose sum is σ = 113031020258. Its totient is φ = 113031020256.

The previous prime is 113031020239. The next prime is 113031020287. The reversal of 113031020257 is 752020130311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90216730321 + 22814289936 = 300361^2 + 151044^2 .

It is a cyclic number.

It is not a de Polignac number, because 113031020257 - 2¹⁹ = 113030495969 is a prime.

It is not a weakly prime, because it can be changed into another prime (113031020237) 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 as a sum of consecutive naturals, namely, 56515510128 + 56515510129.

It is an arithmetic number, because the mean of its divisors is an integer number (56515510129).

Almost surely, 2^113031020257 is an apocalyptic number.

It is an amenable number.

113031020257 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031020257 is an equidigital number, since it uses as much as digits as its factorization.

113031020257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 113031020257 its reverse (752020130311), we get a palindrome (865051150568).

The spelling of 113031020257 in words is "one hundred thirteen billion, thirty-one million, twenty thousand, two hundred fifty-seven".