131325034021 has 4 divisors (see below), whose sum is σ = 135853483500. Its totient is φ = 126796584544.

The previous prime is 131325034007. The next prime is 131325034073. The reversal of 131325034021 is 120430523131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82995848100 + 48329185921 = 288090^2 + 219839^2 .

It is a cyclic number.

It is not a de Polignac number, because 131325034021 - 2⁷ = 131325033893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131325034121) 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, 2264224696 + ... + 2264224753.

It is an arithmetic number, because the mean of its divisors is an integer number (33963370875).

Almost surely, 2^131325034021 is an apocalyptic number.

It is an amenable number.

131325034021 is a deficient number, since it is larger than the sum of its proper divisors (4528449479).

131325034021 is an equidigital number, since it uses as much as digits as its factorization.

131325034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528449478.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 131325034021 its reverse (120430523131), we get a palindrome (251755557152).

The spelling of 131325034021 in words is "one hundred thirty-one billion, three hundred twenty-five million, thirty-four thousand, twenty-one".