46331991 has 12 divisors (see below), whose sum is σ = 67013232. Its totient is φ = 30846816.

The previous prime is 46331983. The next prime is 46331993. The reversal of 46331991 is 19913364.

46331991 is a `hidden beast` number, since 4 + 633 + 19 + 9 + 1 = 666.

It is not a de Polignac number, because 46331991 - 2³ = 46331983 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46331993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4710 + ... + 10716.

It is an arithmetic number, because the mean of its divisors is an integer number (5584436).

Almost surely, 2^46331991 is an apocalyptic number.

46331991 is a deficient number, since it is larger than the sum of its proper divisors (20681241).

46331991 is a wasteful number, since it uses less digits than its factorization.

46331991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870 (or 6867 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 46331991 is about 6806.7606833207. The cubic root of 46331991 is about 359.1647069216.

The spelling of 46331991 in words is "forty-six million, three hundred thirty-one thousand, nine hundred ninety-one".