2391031966 has 8 divisors (see below), whose sum is σ = 3586815360. Its totient is φ = 1195426848.

The previous prime is 2391031949. The next prime is 2391031969. The reversal of 2391031966 is 6691301932.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391031969) 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, 3451 + ... + 69238.

It is an arithmetic number, because the mean of its divisors is an integer number (448351920).

Almost surely, 2^2391031966 is an apocalyptic number.

2391031966 is a deficient number, since it is larger than the sum of its proper divisors (1195783394).

2391031966 is a wasteful number, since it uses less digits than its factorization.

2391031966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89138.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 2391031966 is about 48898.1795775671. The cubic root of 2391031966 is about 1337.1961805152.

The spelling of 2391031966 in words is "two billion, three hundred ninety-one million, thirty-one thousand, nine hundred sixty-six".