113213123 has 2 divisors, whose sum is σ = 113213124. Its totient is φ = 113213122.

The previous prime is 113213099. The next prime is 113213143. The reversal of 113213123 is 321312311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113213123 - 2¹⁸ = 112950979 is a prime.

It is a super-2 number, since 2×113213123² = 25634422438826258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113213143) 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, 56606561 + 56606562.

It is an arithmetic number, because the mean of its divisors is an integer number (56606562).

Almost surely, 2^113213123 is an apocalyptic number.

113213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

113213123 is an equidigital number, since it uses as much as digits as its factorization.

113213123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 113213123 is about 10640.1655532233. The cubic root of 113213123 is about 483.7625633996.

Adding to 113213123 its reverse (321312311), we get a palindrome (434525434).

It can be divided in two parts, 11 and 3213123, that multiplied together give a palindrome (35344353).

The spelling of 113213123 in words is "one hundred thirteen million, two hundred thirteen thousand, one hundred twenty-three".