131005204451 has 8 divisors (see below), whose sum is σ = 143141265408. Its totient is φ = 118906893000.

The previous prime is 131005204439. The next prime is 131005204471. The reversal of 131005204451 is 154402500131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131005204451 is a prime.

It is a super-2 number, since 2×131005204451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131005204451.

It is not an unprimeable number, because it can be changed into a prime (131005204411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9430115 + ... + 9443996.

It is an arithmetic number, because the mean of its divisors is an integer number (17892658176).

Almost surely, 2^131005204451 is an apocalyptic number.

131005204451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131005204451 is a deficient number, since it is larger than the sum of its proper divisors (12136060957).

131005204451 is a wasteful number, since it uses less digits than its factorization.

131005204451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18874753.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 131005204451 its reverse (154402500131), we get a palindrome (285407704582).

The spelling of 131005204451 in words is "one hundred thirty-one billion, five million, two hundred four thousand, four hundred fifty-one".