2132991 has 12 divisors (see below), whose sum is σ = 3521232. Its totient is φ = 1218816.

The previous prime is 2132989. The next prime is 2132993. The reversal of 2132991 is 1992312.

It is an interprime number because it is at equal distance from previous prime (2132989) and next prime (2132993).

It is not a de Polignac number, because 2132991 - 2¹ = 2132989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16866 + ... + 16991.

It is an arithmetic number, because the mean of its divisors is an integer number (293436).

2^2132991 is an apocalyptic number.

2132991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2132991 is a deficient number, since it is larger than the sum of its proper divisors (1388241).

2132991 is a wasteful number, since it uses less digits than its factorization.

2132991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33870 (or 33867 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 2132991 is about 1460.4762921732. The cubic root of 2132991 is about 128.7250317624.

The spelling of 2132991 in words is "two million, one hundred thirty-two thousand, nine hundred ninety-one".