102023111 has 4 divisors (see below), whose sum is σ = 103545912. Its totient is φ = 100500312.

The previous prime is 102023087. The next prime is 102023143. The reversal of 102023111 is 111320201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111320201 = 4091 ⋅27211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102023111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102023092 and 102023101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022111) 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, 761300 + ... + 761433.

It is an arithmetic number, because the mean of its divisors is an integer number (25886478).

Almost surely, 2^102023111 is an apocalyptic number.

102023111 is a deficient number, since it is larger than the sum of its proper divisors (1522801).

102023111 is an equidigital number, since it uses as much as digits as its factorization.

102023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522800.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102023111 is about 10100.6490385519. The cubic root of 102023111 is about 467.2681584678.

Adding to 102023111 its reverse (111320201), we get a palindrome (213343312).

The spelling of 102023111 in words is "one hundred two million, twenty-three thousand, one hundred eleven".