123897081 has 32 divisors (see below), whose sum is σ = 216806400. Its totient is φ = 60972480.

The previous prime is 123897079. The next prime is 123897083. The reversal of 123897081 is 180798321.

It is an interprime number because it is at equal distance from previous prime (123897079) and next prime (123897083).

It is not a de Polignac number, because 123897081 - 2¹ = 123897079 is a prime.

It is a super-2 number, since 2×123897081² = 30700973360641122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123897083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9726 + ... + 18503.

It is an arithmetic number, because the mean of its divisors is an integer number (6775200).

Almost surely, 2^123897081 is an apocalyptic number.

123897081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123897081 is a deficient number, since it is larger than the sum of its proper divisors (92909319).

123897081 is a wasteful number, since it uses less digits than its factorization.

123897081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28269.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 123897081 is about 11130.9065668525. The cubic root of 123897081 is about 498.5250949213.

The spelling of 123897081 in words is "one hundred twenty-three million, eight hundred ninety-seven thousand, eighty-one".