131323103121 has 24 divisors (see below), whose sum is σ = 203699725344. Its totient is φ = 75036279360.

The previous prime is 131323103083. The next prime is 131323103137. The reversal of 131323103121 is 121301323131.

It is a happy number.

It is not a de Polignac number, because 131323103121 - 2³¹ = 129175619473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (131323103161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2833666 + ... + 2879636.

It is an arithmetic number, because the mean of its divisors is an integer number (8487488556).

Almost surely, 2^131323103121 is an apocalyptic number.

It is an amenable number.

131323103121 is a deficient number, since it is larger than the sum of its proper divisors (72376622223).

131323103121 is a wasteful number, since it uses less digits than its factorization.

131323103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65421 (or 65414 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131323103121 its reverse (121301323131), we get a palindrome (252624426252).

The spelling of 131323103121 in words is "one hundred thirty-one billion, three hundred twenty-three million, one hundred three thousand, one hundred twenty-one".