113203031 has 2 divisors, whose sum is σ = 113203032. Its totient is φ = 113203030.

The previous prime is 113203021. The next prime is 113203049. The reversal of 113203031 is 130302311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113203031 - 2⁶ = 113202967 is a prime.

It is a super-2 number, since 2×113203031² = 25629852455173922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 113202997 and 113203015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113203021) 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, 56601515 + 56601516.

It is an arithmetic number, because the mean of its divisors is an integer number (56601516).

Almost surely, 2^113203031 is an apocalyptic number.

113203031 is a deficient number, since it is larger than the sum of its proper divisors (1).

113203031 is an equidigital number, since it uses as much as digits as its factorization.

113203031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 113203031 is about 10639.6913019129. The cubic root of 113203031 is about 483.7481885147.

Adding to 113203031 its reverse (130302311), we get a palindrome (243505342).

The spelling of 113203031 in words is "one hundred thirteen million, two hundred three thousand, thirty-one".