123869011 has 6 divisors (see below), whose sum is σ = 144092580. Its totient is φ = 106173396.

The previous prime is 123868991. The next prime is 123869041. The reversal of 123869011 is 110968321.

It is not a de Polignac number, because 123869011 - 2²³ = 115480403 is a prime.

It is a super-2 number, since 2×123869011² = 30687063772236242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123869041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263921 + ... + 1264018.

It is an arithmetic number, because the mean of its divisors is an integer number (24015430).

Almost surely, 2^123869011 is an apocalyptic number.

123869011 is a deficient number, since it is larger than the sum of its proper divisors (20223569).

123869011 is an equidigital number, since it uses as much as digits as its factorization.

123869011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527953 (or 2527946 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 123869011 is about 11129.6455918416. The cubic root of 123869011 is about 498.4874436271.

The spelling of 123869011 in words is "one hundred twenty-three million, eight hundred sixty-nine thousand, eleven".