2136813531 has 8 divisors (see below), whose sum is σ = 2849305104. Its totient is φ = 1424432160.

The previous prime is 2136813509. The next prime is 2136813557. The reversal of 2136813531 is 1353186312.

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

It is not a de Polignac number, because 2136813531 - 2⁷ = 2136813403 is a prime.

It is a super-2 number, since 2×2136813531² = 9131944132529375922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2136813492 and 2136813501.

It is not an unprimeable number, because it can be changed into a prime (2136813331) 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 7 ways as a sum of consecutive naturals, for example, 44961 + ... + 79341.

It is an arithmetic number, because the mean of its divisors is an integer number (356163138).

Almost surely, 2^2136813531 is an apocalyptic number.

2136813531 is a deficient number, since it is larger than the sum of its proper divisors (712491573).

2136813531 is a wasteful number, since it uses less digits than its factorization.

2136813531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55101.

The product of its digits is 12960, while the sum is 33.

The square root of 2136813531 is about 46225.6804276584. The cubic root of 2136813531 is about 1288.0188187248.

Adding to 2136813531 its reverse (1353186312), we get a palindrome (3489999843).

The spelling of 2136813531 in words is "two billion, one hundred thirty-six million, eight hundred thirteen thousand, five hundred thirty-one".