123712881 has 8 divisors (see below), whose sum is σ = 167210400. Its totient is φ = 81345312.

The previous prime is 123712877. The next prime is 123712891. The reversal of 123712881 is 188217321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123712881 - 2² = 123712877 is a prime.

It is a super-2 number, since 2×123712881² = 30609753850640322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123712871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282231 + ... + 282668.

It is an arithmetic number, because the mean of its divisors is an integer number (20901300).

Almost surely, 2^123712881 is an apocalyptic number.

It is an amenable number.

123712881 is a deficient number, since it is larger than the sum of its proper divisors (43497519).

123712881 is an equidigital number, since it uses as much as digits as its factorization.

123712881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564975.

The product of its digits is 5376, while the sum is 33.

The square root of 123712881 is about 11122.6292305372. The cubic root of 123712881 is about 498.2779170029.

The spelling of 123712881 in words is "one hundred twenty-three million, seven hundred twelve thousand, eight hundred eighty-one".