131451103999 has 4 divisors (see below), whose sum is σ = 131481699664. Its totient is φ = 131420508336.

The previous prime is 131451103997. The next prime is 131451104051. The reversal of 131451103999 is 999301154131.

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

It is a cyclic number.

It is not a de Polignac number, because 131451103999 - 2¹ = 131451103997 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 (131451103997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15291387 + ... + 15299980.

It is an arithmetic number, because the mean of its divisors is an integer number (32870424916).

Almost surely, 2^131451103999 is an apocalyptic number.

131451103999 is a deficient number, since it is larger than the sum of its proper divisors (30595665).

131451103999 is an equidigital number, since it uses as much as digits as its factorization.

131451103999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30595664.

The product of its (nonzero) digits is 131220, while the sum is 46.

The spelling of 131451103999 in words is "one hundred thirty-one billion, four hundred fifty-one million, one hundred three thousand, nine hundred ninety-nine".