40313331 has 6 divisors (see below), whose sum is σ = 58230380. Its totient is φ = 26875548.

The previous prime is 40313327. The next prime is 40313333. The reversal of 40313331 is 13331304.

It is not a de Polignac number, because 40313331 - 2² = 40313327 is a prime.

It is a super-2 number, since 2×40313331² = 3250329312631122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40313333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2239621 + ... + 2239638.

Almost surely, 2^40313331 is an apocalyptic number.

40313331 is a deficient number, since it is larger than the sum of its proper divisors (17917049).

40313331 is a wasteful number, since it uses less digits than its factorization.

40313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479265 (or 4479262 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 40313331 is about 6349.2779904490. The cubic root of 40313331 is about 342.8858485638.

Adding to 40313331 its reverse (13331304), we get a palindrome (53644635).

The spelling of 40313331 in words is "forty million, three hundred thirteen thousand, three hundred thirty-one".