131033231331 has 4 divisors (see below), whose sum is σ = 174710975112. Its totient is φ = 87355487552.

The previous prime is 131033231279. The next prime is 131033231339. The reversal of 131033231331 is 133132330131.

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 131033231331 - 2¹⁴ = 131033214947 is a prime.

It is a super-2 number, since 2×131033231331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131033231339) 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 3 ways as a sum of consecutive naturals, for example, 21838871886 + ... + 21838871891.

It is an arithmetic number, because the mean of its divisors is an integer number (43677743778).

Almost surely, 2^131033231331 is an apocalyptic number.

131033231331 is a deficient number, since it is larger than the sum of its proper divisors (43677743781).

131033231331 is an equidigital number, since it uses as much as digits as its factorization.

131033231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43677743780.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 131033231331 its reverse (133132330131), we get a palindrome (264165561462).

The spelling of 131033231331 in words is "one hundred thirty-one billion, thirty-three million, two hundred thirty-one thousand, three hundred thirty-one".