3132991 has 4 divisors (see below), whose sum is σ = 3269232. Its totient is φ = 2996752.

The previous prime is 3132979. The next prime is 3133019. The reversal of 3132991 is 1992313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1992313 = 41 ⋅48593.

It is a cyclic number.

It is not a de Polignac number, because 3132991 - 2¹¹ = 3130943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3132971) 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, 68086 + ... + 68131.

It is an arithmetic number, because the mean of its divisors is an integer number (817308).

Almost surely, 2^3132991 is an apocalyptic number.

3132991 is a deficient number, since it is larger than the sum of its proper divisors (136241).

3132991 is a wasteful number, since it uses less digits than its factorization.

3132991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136240.

The product of its digits is 1458, while the sum is 28.

The square root of 3132991 is about 1770.0257060280. The cubic root of 3132991 is about 146.3253985778.

The spelling of 3132991 in words is "three million, one hundred thirty-two thousand, nine hundred ninety-one".