1023103111 has 4 divisors (see below), whose sum is σ = 1023239952. Its totient is φ = 1022966272.

The previous prime is 1023103099. The next prime is 1023103117. The reversal of 1023103111 is 1113013201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023103111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023103091 and 1023103100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023103117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56515 + ... + 72388.

It is an arithmetic number, because the mean of its divisors is an integer number (255809988).

Almost surely, 2^1023103111 is an apocalyptic number.

1023103111 is a deficient number, since it is larger than the sum of its proper divisors (136841).

1023103111 is an equidigital number, since it uses as much as digits as its factorization.

1023103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136840.

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

The square root of 1023103111 is about 31985.9830394503. The cubic root of 1023103111 is about 1007.6424806961.

Adding to 1023103111 its reverse (1113013201), we get a palindrome (2136116312).

The spelling of 1023103111 in words is "one billion, twenty-three million, one hundred three thousand, one hundred eleven".