131121201003 has 16 divisors (see below), whose sum is σ = 188816090400. Its totient is φ = 80458758144.

The previous prime is 131121200999. The next prime is 131121201019. The reversal of 131121201003 is 300102121131.

It is a happy number.

It is not a de Polignac number, because 131121201003 - 2² = 131121200999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131121201203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4803126 + ... + 4830347.

It is an arithmetic number, because the mean of its divisors is an integer number (11801005650).

Almost surely, 2^131121201003 is an apocalyptic number.

131121201003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131121201003 is a deficient number, since it is larger than the sum of its proper divisors (57694889397).

131121201003 is a wasteful number, since it uses less digits than its factorization.

131121201003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633838.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131121201003 its reverse (300102121131), we get a palindrome (431223322134).

The spelling of 131121201003 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred one thousand, three".