40731193 has 8 divisors (see below), whose sum is σ = 43161920. Its totient is φ = 38329200.

The previous prime is 40731161. The next prime is 40731199. The reversal of 40731193 is 39113704.

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 40731193 - 2⁵ = 40731161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40731199) 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, 4230 + ... + 9967.

It is an arithmetic number, because the mean of its divisors is an integer number (5395240).

Almost surely, 2^40731193 is an apocalyptic number.

It is an amenable number.

40731193 is a deficient number, since it is larger than the sum of its proper divisors (2430727).

40731193 is a wasteful number, since it uses less digits than its factorization.

40731193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14367.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 40731193 is about 6382.0994194701. The cubic root of 40731193 is about 344.0664898744.

Adding to 40731193 its reverse (39113704), we get a palindrome (79844897).

The spelling of 40731193 in words is "forty million, seven hundred thirty-one thousand, one hundred ninety-three".