131231330331 has 16 divisors (see below), whose sum is σ = 176931659520. Its totient is φ = 86512471200.

The previous prime is 131231330297. The next prime is 131231330333. The reversal of 131231330331 is 133033132131.

It is not a de Polignac number, because 131231330331 - 2¹³ = 131231322139 is a prime.

It is a super-2 number, since 2×131231330331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131231330333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234445 + ... + 563406.

It is an arithmetic number, because the mean of its divisors is an integer number (11058228720).

Almost surely, 2^131231330331 is an apocalyptic number.

131231330331 is a deficient number, since it is larger than the sum of its proper divisors (45700329189).

131231330331 is a wasteful number, since it uses less digits than its factorization.

131231330331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798466.

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

Adding to 131231330331 its reverse (133033132131), we get a palindrome (264264462462).

The spelling of 131231330331 in words is "one hundred thirty-one billion, two hundred thirty-one million, three hundred thirty thousand, three hundred thirty-one".