113209951 has 2 divisors, whose sum is σ = 113209952. Its totient is φ = 113209950.

The previous prime is 113209949. The next prime is 113210003. The reversal of 113209951 is 159902311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113209951 - 2¹ = 113209949 is a prime.

Together with 113209949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113249951) 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, 56604975 + 56604976.

It is an arithmetic number, because the mean of its divisors is an integer number (56604976).

Almost surely, 2^113209951 is an apocalyptic number.

113209951 is a deficient number, since it is larger than the sum of its proper divisors (1).

113209951 is an equidigital number, since it uses as much as digits as its factorization.

113209951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 113209951 is about 10640.0164943481. The cubic root of 113209951 is about 483.7580453451.

The spelling of 113209951 in words is "one hundred thirteen million, two hundred nine thousand, nine hundred fifty-one".