40731761 has 4 divisors (see below), whose sum is σ = 46550592. Its totient is φ = 34912932.

The previous prime is 40731727. The next prime is 40731787. The reversal of 40731761 is 16713704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40731761 is a prime.

It is a super-2 number, since 2×40731761² = 3318152708322242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40731701) 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, 2909405 + ... + 2909418.

It is an arithmetic number, because the mean of its divisors is an integer number (11637648).

Almost surely, 2^40731761 is an apocalyptic number.

It is an amenable number.

40731761 is a deficient number, since it is larger than the sum of its proper divisors (5818831).

40731761 is an equidigital number, since it uses as much as digits as its factorization.

40731761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818830.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 40731761 is about 6382.1439187784. The cubic root of 40731761 is about 344.0680892126.

The spelling of 40731761 in words is "forty million, seven hundred thirty-one thousand, seven hundred sixty-one".