102123131313131 has 4 divisors (see below), whose sum is σ = 102166904625072. Its totient is φ = 102079358001192.

The previous prime is 102123131313067. The next prime is 102123131313179. The reversal of 102123131313131 is 131313131321201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102123131313131 - 2⁶ = 102123131313067 is a prime.

It is a super-2 number, since 2×102123131313131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102123131313131.

It is not an unprimeable number, because it can be changed into a prime (102123131316131) 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, 21886652471 + ... + 21886657136.

It is an arithmetic number, because the mean of its divisors is an integer number (25541726156268).

Almost surely, 2^{102123131313131} is an apocalyptic number.

102123131313131 is a deficient number, since it is larger than the sum of its proper divisors (43773311941).

102123131313131 is an equidigital number, since it uses as much as digits as its factorization.

102123131313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43773311940.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 102123131313131 its reverse (131313131321201), we get a palindrome (233436262634332).

The spelling of 102123131313131 in words is "one hundred two trillion, one hundred twenty-three billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".