102003312331 has 4 divisors (see below), whose sum is σ = 108003507192. Its totient is φ = 96003117472.

The previous prime is 102003312311. The next prime is 102003312379. The reversal of 102003312331 is 133213300201.

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-102003312331 is a prime.

It is a super-2 number, since 2×102003312331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102003312299 and 102003312308.

It is not an unprimeable number, because it can be changed into a prime (102003312311) 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, 3000097405 + ... + 3000097438.

It is an arithmetic number, because the mean of its divisors is an integer number (27000876798).

Almost surely, 2^102003312331 is an apocalyptic number.

102003312331 is a deficient number, since it is larger than the sum of its proper divisors (6000194861).

102003312331 is an equidigital number, since it uses as much as digits as its factorization.

102003312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000194860.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 102003312331 its reverse (133213300201), we get a palindrome (235216612532).

The spelling of 102003312331 in words is "one hundred two billion, three million, three hundred twelve thousand, three hundred thirty-one".