2131955 has 8 divisors (see below), whose sum is σ = 2923872. Its totient is φ = 1461888.

The previous prime is 2131951. The next prime is 2131979. The reversal of 2131955 is 5591312.

2131955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2131955 - 2² = 2131951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30422 + ... + 30491.

It is an arithmetic number, because the mean of its divisors is an integer number (365484).

2^2131955 is an apocalyptic number.

2131955 is a deficient number, since it is larger than the sum of its proper divisors (791917).

2131955 is an equidigital number, since it uses as much as digits as its factorization.

2131955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60925.

The product of its digits is 1350, while the sum is 26.

The square root of 2131955 is about 1460.1215702811. The cubic root of 2131955 is about 128.7041876786.

The spelling of 2131955 in words is "two million, one hundred thirty-one thousand, nine hundred fifty-five".