102131123 has 8 divisors (see below), whose sum is σ = 105080976. Its totient is φ = 99203200.

The previous prime is 102131119. The next prime is 102131131. The reversal of 102131123 is 321131201.

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

It is a cyclic number.

It is not a de Polignac number, because 102131123 - 2² = 102131119 is a prime.

It is a super-2 number, since 2×102131123² = 20861532570482258, 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 = 102131098 and 102131107.

It is not an unprimeable number, because it can be changed into a prime (102131723) 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, 4208 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (13135122).

Almost surely, 2^102131123 is an apocalyptic number.

102131123 is a deficient number, since it is larger than the sum of its proper divisors (2949853).

102131123 is a wasteful number, since it uses less digits than its factorization.

102131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10965.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 102131123 is about 10105.9944092603. The cubic root of 102131123 is about 467.4329994443.

Adding to 102131123 its reverse (321131201), we get a palindrome (423262324).

The spelling of 102131123 in words is "one hundred two million, one hundred thirty-one thousand, one hundred twenty-three".