123103011 has 16 divisors (see below), whose sum is σ = 167989248. Its totient is φ = 80150400.

The previous prime is 123103007. The next prime is 123103031. The reversal of 123103011 is 110301321.

It is not a de Polignac number, because 123103011 - 2² = 123103007 is a prime.

It is a super-2 number, since 2×123103011² = 30308702634532242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123103031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123726 + ... + 124716.

It is an arithmetic number, because the mean of its divisors is an integer number (10499328).

Almost surely, 2^123103011 is an apocalyptic number.

123103011 is a deficient number, since it is larger than the sum of its proper divisors (44886237).

123103011 is an equidigital number, since it uses as much as digits as its factorization.

123103011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 123103011 is about 11095.1796290101. The cubic root of 123103011 is about 497.4577774492.

Adding to 123103011 its reverse (110301321), we get a palindrome (233404332).

The spelling of 123103011 in words is "one hundred twenty-three million, one hundred three thousand, eleven".