1023103191 has 32 divisors (see below), whose sum is σ = 1523598336. Its totient is φ = 605360000.

The previous prime is 1023103183. The next prime is 1023103201. The reversal of 1023103191 is 1913013201.

It is not a de Polignac number, because 1023103191 - 2³ = 1023103183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023103121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1086781 + ... + 1087721.

It is an arithmetic number, because the mean of its divisors is an integer number (47612448).

Almost surely, 2^1023103191 is an apocalyptic number.

1023103191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1023103191 is a deficient number, since it is larger than the sum of its proper divisors (500495145).

1023103191 is a wasteful number, since it uses less digits than its factorization.

1023103191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1023103191 is about 31985.9842899980. The cubic root of 1023103191 is about 1007.6425069597.

Adding to 1023103191 its reverse (1913013201), we get a palindrome (2936116392).

It can be divided in two parts, 102310 and 3191, that added together give a palindrome (105501).

The spelling of 1023103191 in words is "one billion, twenty-three million, one hundred three thousand, one hundred ninety-one".