40312371 has 16 divisors (see below), whose sum is σ = 60001920. Its totient is φ = 23862720.

The previous prime is 40312367. The next prime is 40312403. The reversal of 40312371 is 17321304.

It is not a de Polignac number, because 40312371 - 2² = 40312367 is a prime.

It is a super-3 number, since 3×40312371³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40312301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12786 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (3750120).

Almost surely, 2^40312371 is an apocalyptic number.

40312371 is a deficient number, since it is larger than the sum of its proper divisors (19689549).

40312371 is a wasteful number, since it uses less digits than its factorization.

40312371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28466.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 40312371 is about 6349.2023908519. The cubic root of 40312371 is about 342.8831267758.

Adding to 40312371 its reverse (17321304), we get a palindrome (57633675).

The spelling of 40312371 in words is "forty million, three hundred twelve thousand, three hundred seventy-one".