102030031111 has 4 divisors (see below), whose sum is σ = 102082383000. Its totient is φ = 101977679224.

The previous prime is 102030031109. The next prime is 102030031157. The reversal of 102030031111 is 111130030201.

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 102030031111 - 2¹ = 102030031109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102030031091 and 102030031100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102030031171) 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, 26173021 + ... + 26176918.

It is an arithmetic number, because the mean of its divisors is an integer number (25520595750).

Almost surely, 2^102030031111 is an apocalyptic number.

102030031111 is a deficient number, since it is larger than the sum of its proper divisors (52351889).

102030031111 is an equidigital number, since it uses as much as digits as its factorization.

102030031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52351888.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 102030031111 its reverse (111130030201), we get a palindrome (213160061312).

The spelling of 102030031111 in words is "one hundred two billion, thirty million, thirty-one thousand, one hundred eleven".