131312222143 has 4 divisors (see below), whose sum is σ = 131664266008. Its totient is φ = 130960178280.

The previous prime is 131312222113. The next prime is 131312222161. The reversal of 131312222143 is 341222213131.

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

It is a cyclic number.

It is not a de Polignac number, because 131312222143 - 2¹³ = 131312213951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312222113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176021373 + ... + 176022118.

It is an arithmetic number, because the mean of its divisors is an integer number (32916066502).

Almost surely, 2^131312222143 is an apocalyptic number.

131312222143 is a deficient number, since it is larger than the sum of its proper divisors (352043865).

131312222143 is an equidigital number, since it uses as much as digits as its factorization.

131312222143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352043864.

The product of its digits is 1728, while the sum is 25.

Adding to 131312222143 its reverse (341222213131), we get a palindrome (472534435274).

The spelling of 131312222143 in words is "one hundred thirty-one billion, three hundred twelve million, two hundred twenty-two thousand, one hundred forty-three".