40000031325 has 36 divisors (see below), whose sum is σ = 74115012660. Its totient is φ = 20597713920.

The previous prime is 40000031317. The next prime is 40000031399. The reversal of 40000031325 is 52313000004.

It can be written as a sum of positive squares in 6 ways, for example, as 5631129 + 39994400196 = 2373^2 + 199986^2 .

It is not a de Polignac number, because 40000031325 - 2³ = 40000031317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40000031298 and 40000031307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3058612 + ... + 3071661.

Almost surely, 2^40000031325 is an apocalyptic number.

40000031325 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40000031325 is a deficient number, since it is larger than the sum of its proper divisors (34114981335).

40000031325 is a wasteful number, since it uses less digits than its factorization.

40000031325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6130318 (or 6130310 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 40000031325 its reverse (52313000004), we get a palindrome (92313031329).

The spelling of 40000031325 in words is "forty billion, thirty-one thousand, three hundred twenty-five".