131321210233 has 4 divisors (see below), whose sum is σ = 131820530688. Its totient is φ = 130821889780.

The previous prime is 131321210203. The next prime is 131321210243. The reversal of 131321210233 is 332012123131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332012123131 = 13 ⋅25539394087.

It is a cyclic number.

It is not a de Polignac number, because 131321210233 - 2¹³ = 131321202041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321210203) 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, 249659833 + ... + 249660358.

It is an arithmetic number, because the mean of its divisors is an integer number (32955132672).

Almost surely, 2^131321210233 is an apocalyptic number.

It is an amenable number.

131321210233 is a deficient number, since it is larger than the sum of its proper divisors (499320455).

131321210233 is an equidigital number, since it uses as much as digits as its factorization.

131321210233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499320454.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131321210233 its reverse (332012123131), we get a palindrome (463333333364).

The spelling of 131321210233 in words is "one hundred thirty-one billion, three hundred twenty-one million, two hundred ten thousand, two hundred thirty-three".