102123031111 has 8 divisors (see below), whose sum is σ = 103810543200. Its totient is φ = 100435950240.

The previous prime is 102123031081. The next prime is 102123031123. The reversal of 102123031111 is 111130321201.

It is a happy number.

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 102123031111 - 2⁹ = 102123030599 is a prime.

It is a super-2 number, since 2×102123031111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123031141) 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, 388470 + ... + 595948.

It is an arithmetic number, because the mean of its divisors is an integer number (12976317900).

Almost surely, 2^102123031111 is an apocalyptic number.

102123031111 is a deficient number, since it is larger than the sum of its proper divisors (1687512089).

102123031111 is an equidigital number, since it uses as much as digits as its factorization.

102123031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215609.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 102123031111 its reverse (111130321201), we get a palindrome (213253352312).

The spelling of 102123031111 in words is "one hundred two billion, one hundred twenty-three million, thirty-one thousand, one hundred eleven".