113211643 has 2 divisors, whose sum is σ = 113211644. Its totient is φ = 113211642.

The previous prime is 113211617. The next prime is 113211667. The reversal of 113211643 is 346112311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113211643 - 2⁵ = 113211611 is a prime.

It is a super-2 number, since 2×113211643² = 25633752221518898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113211613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56605821 + 56605822.

It is an arithmetic number, because the mean of its divisors is an integer number (56605822).

Almost surely, 2^113211643 is an apocalyptic number.

113211643 is a deficient number, since it is larger than the sum of its proper divisors (1).

113211643 is an equidigital number, since it uses as much as digits as its factorization.

113211643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 113211643 is about 10640.0960052060. The cubic root of 113211643 is about 483.7604553645.

Adding to 113211643 its reverse (346112311), we get a palindrome (459323954).

The spelling of 113211643 in words is "one hundred thirteen million, two hundred eleven thousand, six hundred forty-three".