2931491 has 8 divisors (see below), whose sum is σ = 3102480. Its totient is φ = 2762208.

The previous prime is 2931457. The next prime is 2931493. The reversal of 2931491 is 1941392.

It is a happy number.

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 2931491 - 2⁶ = 2931427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2931493) 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, 4985 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (387810).

2^2931491 is an apocalyptic number.

2931491 is a deficient number, since it is larger than the sum of its proper divisors (170989).

2931491 is a wasteful number, since it uses less digits than its factorization.

2931491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its digits is 1944, while the sum is 29.

The square root of 2931491 is about 1712.1597472199. The cubic root of 2931491 is about 143.1186359622.

Subtracting from 2931491 its reverse (1941392), we obtain a palindrome (990099).

The spelling of 2931491 in words is "two million, nine hundred thirty-one thousand, four hundred ninety-one".