113123011 has 4 divisors (see below), whose sum is σ = 113162400. Its totient is φ = 113083624.

The previous prime is 113122991. The next prime is 113123033. The reversal of 113123011 is 110321311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110321311 = 6113 ⋅18047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113123011 is a prime.

It is a super-2 number, since 2×113123011² = 25593631235412242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113122982 and 113123000.

It is not an unprimeable number, because it can be changed into a prime (113123071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15016 + ... + 21253.

It is an arithmetic number, because the mean of its divisors is an integer number (28290600).

Almost surely, 2^113123011 is an apocalyptic number.

113123011 is a deficient number, since it is larger than the sum of its proper divisors (39389).

113123011 is an equidigital number, since it uses as much as digits as its factorization.

113123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39388.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 113123011 is about 10635.9301896919. The cubic root of 113123011 is about 483.6341790393.

Adding to 113123011 its reverse (110321311), we get a palindrome (223444322).

It can be divided in two parts, 1131 and 23011, that added together give a palindrome (24142).

The spelling of 113123011 in words is "one hundred thirteen million, one hundred twenty-three thousand, eleven".