40312541 has 4 divisors (see below), whose sum is σ = 40456284. Its totient is φ = 40168800.

The previous prime is 40312529. The next prime is 40312549. The reversal of 40312541 is 14521304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30415225 + 9897316 = 5515^2 + 3146^2 .

It is a cyclic number.

It is not a de Polignac number, because 40312541 - 2¹⁸ = 40050397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312549) 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, 71450 + ... + 72011.

It is an arithmetic number, because the mean of its divisors is an integer number (10114071).

Almost surely, 2^40312541 is an apocalyptic number.

It is an amenable number.

40312541 is a deficient number, since it is larger than the sum of its proper divisors (143743).

40312541 is a wasteful number, since it uses less digits than its factorization.

40312541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143742.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40312541 is about 6349.2157783462. The cubic root of 40312541 is about 342.8836087622.

Adding to 40312541 its reverse (14521304), we get a palindrome (54833845).

The spelling of 40312541 in words is "forty million, three hundred twelve thousand, five hundred forty-one".