2131917 has 8 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 1401120.

The previous prime is 2131907. The next prime is 2131937. The reversal of 2131917 is 7191312.

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

It is not a de Polignac number, because 2131917 - 2⁶ = 2131853 is a prime.

2131917 is a modest number, since divided by 1917 gives 213 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131907) 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, 4792 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

2^2131917 is an apocalyptic number.

It is an amenable number.

2131917 is a deficient number, since it is larger than the sum of its proper divisors (750963).

2131917 is a wasteful number, since it uses less digits than its factorization.

2131917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10083.

The product of its digits is 378, while the sum is 24.

The square root of 2131917 is about 1460.1085576080. The cubic root of 2131917 is about 128.7034229989.

It can be divided in two parts, 213 and 1917, that multiplied together give a square (408321 = 639²).

The spelling of 2131917 in words is "two million, one hundred thirty-one thousand, nine hundred seventeen".