131428781507 has 8 divisors (see below), whose sum is σ = 131510902896. Its totient is φ = 131346692352.

The previous prime is 131428781423. The next prime is 131428781531. The reversal of 131428781507 is 705187824131.

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

It is a cyclic number.

It is not a de Polignac number, because 131428781507 - 2²⁴ = 131412004291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131428781597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17434043 + ... + 17441579.

It is an arithmetic number, because the mean of its divisors is an integer number (16438862862).

Almost surely, 2^131428781507 is an apocalyptic number.

131428781507 is a deficient number, since it is larger than the sum of its proper divisors (82121389).

131428781507 is an equidigital number, since it uses as much as digits as its factorization.

131428781507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16117.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 131428781507 in words is "one hundred thirty-one billion, four hundred twenty-eight million, seven hundred eighty-one thousand, five hundred seven".