102131023 has 8 divisors (see below), whose sum is σ = 107980400. Its totient is φ = 96329088.

The previous prime is 102130999. The next prime is 102131033. The reversal of 102131023 is 320131201.

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

It is a de Polignac number, because none of the positive numbers 2^k-102131023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102130994 and 102131012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131033) 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, 7386 + ... + 16087.

It is an arithmetic number, because the mean of its divisors is an integer number (13497550).

Almost surely, 2^102131023 is an apocalyptic number.

102131023 is a deficient number, since it is larger than the sum of its proper divisors (5849377).

102131023 is a wasteful number, since it uses less digits than its factorization.

102131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23721.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102131023 is about 10105.9894617004. The cubic root of 102131023 is about 467.4328468845.

Adding to 102131023 its reverse (320131201), we get a palindrome (422262224).

It can be divided in two parts, 10213 and 1023, that added together give a square (11236 = 106²).

The spelling of 102131023 in words is "one hundred two million, one hundred thirty-one thousand, twenty-three".