131033312121 has 16 divisors (see below), whose sum is σ = 183698887680. Its totient is φ = 82919625360.

The previous prime is 131033312119. The next prime is 131033312143. The reversal of 131033312121 is 121213330131.

It is a happy number.

It is not a de Polignac number, because 131033312121 - 2¹ = 131033312119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131033312191) 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 15 ways as a sum of consecutive naturals, for example, 7239181 + ... + 7257258.

It is an arithmetic number, because the mean of its divisors is an integer number (11481180480).

Almost surely, 2^131033312121 is an apocalyptic number.

It is an amenable number.

131033312121 is a deficient number, since it is larger than the sum of its proper divisors (52665575559).

131033312121 is a wasteful number, since it uses less digits than its factorization.

131033312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14496596.

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

Adding to 131033312121 its reverse (121213330131), we get a palindrome (252246642252).

The spelling of 131033312121 in words is "one hundred thirty-one billion, thirty-three million, three hundred twelve thousand, one hundred twenty-one".