2131187835 has 16 divisors (see below), whose sum is σ = 3897029376. Its totient is φ = 974257248.

The previous prime is 2131187833. The next prime is 2131187837. The reversal of 2131187835 is 5387811312.

It is an interprime number because it is at equal distance from previous prime (2131187833) and next prime (2131187837).

It is not a de Polignac number, because 2131187835 - 2¹ = 2131187833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131187793 and 2131187802.

It is not an unprimeable number, because it can be changed into a prime (2131187833) 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 15 ways as a sum of consecutive naturals, for example, 10148409 + ... + 10148618.

It is an arithmetic number, because the mean of its divisors is an integer number (243564336).

Almost surely, 2^2131187835 is an apocalyptic number.

2131187835 is a deficient number, since it is larger than the sum of its proper divisors (1765841541).

2131187835 is a wasteful number, since it uses less digits than its factorization.

2131187835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20297042.

The product of its digits is 40320, while the sum is 39.

The square root of 2131187835 is about 46164.7899919408. The cubic root of 2131187835 is about 1286.8874814166.

The spelling of 2131187835 in words is "two billion, one hundred thirty-one million, one hundred eighty-seven thousand, eight hundred thirty-five".