131223320331 has 8 divisors (see below), whose sum is σ = 185256452304. Its totient is φ = 82336200960.

The previous prime is 131223320299. The next prime is 131223320341. The reversal of 131223320331 is 133023322131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131223320331 - 2⁵ = 131223320299 is a prime.

It is a super-2 number, since 2×131223320331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131223320341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286503090 + ... + 1286503191.

It is an arithmetic number, because the mean of its divisors is an integer number (23157056538).

Almost surely, 2^131223320331 is an apocalyptic number.

131223320331 is a deficient number, since it is larger than the sum of its proper divisors (54033131973).

131223320331 is a wasteful number, since it uses less digits than its factorization.

131223320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573006301.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 131223320331 its reverse (133023322131), we get a palindrome (264246642462).

The spelling of 131223320331 in words is "one hundred thirty-one billion, two hundred twenty-three million, three hundred twenty thousand, three hundred thirty-one".