2136931 has 4 divisors (see below), whose sum is σ = 2140000. Its totient is φ = 2133864.

The previous prime is 2136919. The next prime is 2136973. The reversal of 2136931 is 1396312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2136931 - 2⁹ = 2136419 is a prime.

It is a super-2 number, since 2×2136931² = 9132948197522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2136931 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2136896 and 2136905.

It is not an unprimeable number, because it can be changed into a prime (2136991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (535000).

2^2136931 is an apocalyptic number.

2136931 is a deficient number, since it is larger than the sum of its proper divisors (3069).

2136931 is a wasteful number, since it uses less digits than its factorization.

2136931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068.

The product of its digits is 972, while the sum is 25.

The square root of 2136931 is about 1461.8245448753. The cubic root of 2136931 is about 128.8042420770.

The spelling of 2136931 in words is "two million, one hundred thirty-six thousand, nine hundred thirty-one".