40031031 has 8 divisors (see below), whose sum is σ = 53604720. Its totient is φ = 26572352.

The previous prime is 40031029. The next prime is 40031051. The reversal of 40031031 is 13013004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40031031 - 2¹ = 40031029 is a prime.

It is a super-2 number, since 2×40031031² = 3204966885845922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40030998 and 40031016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27936 + ... + 29333.

It is an arithmetic number, because the mean of its divisors is an integer number (6700590).

Almost surely, 2^40031031 is an apocalyptic number.

40031031 is a deficient number, since it is larger than the sum of its proper divisors (13573689).

40031031 is a wasteful number, since it uses less digits than its factorization.

40031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57505.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 40031031 is about 6327.0080606871. The cubic root of 40031031 is about 342.0836035821.

Adding to 40031031 its reverse (13013004), we get a palindrome (53044035).

The spelling of 40031031 in words is "forty million, thirty-one thousand, thirty-one".