2131654 has 16 divisors (see below), whose sum is σ = 3691008. Its totient is φ = 904392.

The previous prime is 2131651. The next prime is 2131669. The reversal of 2131654 is 4561312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131651) 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, 787 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (230688).

2^2131654 is an apocalyptic number.

2131654 is a deficient number, since it is larger than the sum of its proper divisors (1559354).

2131654 is a wasteful number, since it uses less digits than its factorization.

2131654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539.

The product of its digits is 720, while the sum is 22.

The square root of 2131654 is about 1460.0184930336. The cubic root of 2131654 is about 128.6981303613.

Adding to 2131654 its reverse (4561312), we get a palindrome (6692966).

The spelling of 2131654 in words is "two million, one hundred thirty-one thousand, six hundred fifty-four".