2131388767 has 8 divisors (see below), whose sum is σ = 2139645024. Its totient is φ = 2123146848.

The previous prime is 2131388723. The next prime is 2131388773. The reversal of 2131388767 is 7678831312.

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 2131388767 - 2⁷ = 2131388639 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 (2131388717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363753 + ... + 369565.

It is an arithmetic number, because the mean of its divisors is an integer number (267455628).

Almost surely, 2^2131388767 is an apocalyptic number.

2131388767 is a deficient number, since it is larger than the sum of its proper divisors (8256257).

2131388767 is an equidigital number, since it uses as much as digits as its factorization.

2131388767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169.

The product of its digits is 338688, while the sum is 46.

The square root of 2131388767 is about 46166.9661879574. The cubic root of 2131388767 is about 1286.9279234563.

The spelling of 2131388767 in words is "two billion, one hundred thirty-one million, three hundred eighty-eight thousand, seven hundred sixty-seven".