131533122451 has 4 divisors (see below), whose sum is σ = 131566100400. Its totient is φ = 131500144504.

The previous prime is 131533122421. The next prime is 131533122493. The reversal of 131533122451 is 154221335131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154221335131 = 17 ⋅9071843243.

It is a cyclic number.

It is not a de Polignac number, because 131533122451 - 2²¹ = 131531025299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131533122421) 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, 16482991 + ... + 16490968.

It is an arithmetic number, because the mean of its divisors is an integer number (32891525100).

Almost surely, 2^131533122451 is an apocalyptic number.

131533122451 is a deficient number, since it is larger than the sum of its proper divisors (32977949).

131533122451 is an equidigital number, since it uses as much as digits as its factorization.

131533122451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32977948.

The product of its digits is 10800, while the sum is 31.

Adding to 131533122451 its reverse (154221335131), we get a palindrome (285754457582).

The spelling of 131533122451 in words is "one hundred thirty-one billion, five hundred thirty-three million, one hundred twenty-two thousand, four hundred fifty-one".