103131331001 has 4 divisors (see below), whose sum is σ = 103278452004. Its totient is φ = 102984210000.

The previous prime is 103131330989. The next prime is 103131331013. The reversal of 103131331001 is 100133131301.

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

It is an interprime number because it is at equal distance from previous prime (103131330989) and next prime (103131331013).

It can be written as a sum of positive squares in 2 ways, for example, as 93046351225 + 10084979776 = 305035^2 + 100424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103131331001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (103131331201) 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, 73559450 + ... + 73560851.

It is an arithmetic number, because the mean of its divisors is an integer number (25819613001).

Almost surely, 2^103131331001 is an apocalyptic number.

It is an amenable number.

103131331001 is a deficient number, since it is larger than the sum of its proper divisors (147121003).

103131331001 is an equidigital number, since it uses as much as digits as its factorization.

103131331001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147121002.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 103131331001 its reverse (100133131301), we get a palindrome (203264462302).

The spelling of 103131331001 in words is "one hundred three billion, one hundred thirty-one million, three hundred thirty-one thousand, one".