102131017 has 4 divisors (see below), whose sum is σ = 106571520. Its totient is φ = 97690516.

The previous prime is 102130999. The next prime is 102131033. The reversal of 102131017 is 710131201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102131017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102131077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220217 + ... + 2220262.

It is an arithmetic number, because the mean of its divisors is an integer number (26642880).

Almost surely, 2^102131017 is an apocalyptic number.

It is an amenable number.

102131017 is a deficient number, since it is larger than the sum of its proper divisors (4440503).

102131017 is an equidigital number, since it uses as much as digits as its factorization.

102131017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440502.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 102131017 is about 10105.9891648468. The cubic root of 102131017 is about 467.4328377309.

Adding to 102131017 its reverse (710131201), we get a palindrome (812262218).

The spelling of 102131017 in words is "one hundred two million, one hundred thirty-one thousand, seventeen".