131132021333 has 4 divisors (see below), whose sum is σ = 131135584620. Its totient is φ = 131128458048.

The previous prime is 131132021297. The next prime is 131132021341. The reversal of 131132021333 is 333120231131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333120231131 = 991 ⋅336145541.

It can be written as a sum of positive squares in 2 ways, for example, as 54783147364 + 76348873969 = 234058^2 + 276313^2 .

It is a cyclic number.

It is not a de Polignac number, because 131132021333 - 2¹⁶ = 131131955797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131132021299 and 131132021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131132021393) 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, 1725860 + ... + 1800237.

It is an arithmetic number, because the mean of its divisors is an integer number (32783896155).

Almost surely, 2^131132021333 is an apocalyptic number.

It is an amenable number.

131132021333 is a deficient number, since it is larger than the sum of its proper divisors (3563287).

131132021333 is an equidigital number, since it uses as much as digits as its factorization.

131132021333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563286.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131132021333 its reverse (333120231131), we get a palindrome (464252252464).

The spelling of 131132021333 in words is "one hundred thirty-one billion, one hundred thirty-two million, twenty-one thousand, three hundred thirty-three".