40313031 has 16 divisors (see below), whose sum is σ = 58753920. Its totient is φ = 24383520.

The previous prime is 40313011. The next prime is 40313087. The reversal of 40313031 is 13031304.

It is not a de Polignac number, because 40313031 - 2¹⁰ = 40312007 is a prime.

It is a super-2 number, since 2×40313031² = 3250280936813922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40313031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40313011) 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, 22536 + ... + 24258.

It is an arithmetic number, because the mean of its divisors is an integer number (3672120).

Almost surely, 2^40313031 is an apocalyptic number.

40313031 is a deficient number, since it is larger than the sum of its proper divisors (18440889).

40313031 is a wasteful number, since it uses less digits than its factorization.

40313031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 40313031 is about 6349.2543656716. The cubic root of 40313031 is about 342.8849980097.

Adding to 40313031 its reverse (13031304), we get a palindrome (53344335).

It can be divided in two parts, 4031303 and 1, that added together give a palindrome (4031304).

The spelling of 40313031 in words is "forty million, three hundred thirteen thousand, thirty-one".