113321251 has 2 divisors, whose sum is σ = 113321252. Its totient is φ = 113321250.

The previous prime is 113321249. The next prime is 113321267. The reversal of 113321251 is 152123311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113321251 - 2¹ = 113321249 is a prime.

Together with 113321249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113321291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56660625 + 56660626.

It is an arithmetic number, because the mean of its divisors is an integer number (56660626).

Almost surely, 2^113321251 is an apocalyptic number.

113321251 is a deficient number, since it is larger than the sum of its proper divisors (1).

113321251 is an equidigital number, since it uses as much as digits as its factorization.

113321251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 113321251 is about 10645.2454645255. The cubic root of 113321251 is about 483.9165256288.

Adding to 113321251 its reverse (152123311), we get a palindrome (265444562).

The spelling of 113321251 in words is "one hundred thirteen million, three hundred twenty-one thousand, two hundred fifty-one".