131031212223 has 16 divisors (see below), whose sum is σ = 176279775840. Its totient is φ = 86571623424.

The previous prime is 131031212209. The next prime is 131031212237. The reversal of 131031212223 is 322212130131.

It is an interprime number because it is at equal distance from previous prime (131031212209) and next prime (131031212237).

It is not a de Polignac number, because 131031212223 - 2¹⁷ = 131031081151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131031212223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031212243) 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 15 ways as a sum of consecutive naturals, for example, 240858 + ... + 565751.

It is an arithmetic number, because the mean of its divisors is an integer number (11017485990).

Almost surely, 2^131031212223 is an apocalyptic number.

131031212223 is a deficient number, since it is larger than the sum of its proper divisors (45248563617).

131031212223 is a wasteful number, since it uses less digits than its factorization.

131031212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807098.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131031212223 its reverse (322212130131), we get a palindrome (453243342354).

The spelling of 131031212223 in words is "one hundred thirty-one billion, thirty-one million, two hundred twelve thousand, two hundred twenty-three".