40170203031 has 64 divisors (see below), whose sum is σ = 65237835776. Its totient is φ = 21499084800.

The previous prime is 40170203011. The next prime is 40170203033. The reversal of 40170203031 is 13030207104.

It is not a de Polignac number, because 40170203031 - 2⁹ = 40170202519 is a prime.

It is a super-2 number, since 2×40170203031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40170202989 and 40170203007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40170203033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4644471 + ... + 4653111.

It is an arithmetic number, because the mean of its divisors is an integer number (1019341184).

Almost surely, 2^40170203031 is an apocalyptic number.

40170203031 is a deficient number, since it is larger than the sum of its proper divisors (25067632745).

40170203031 is a wasteful number, since it uses less digits than its factorization.

40170203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912.

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

The spelling of 40170203031 in words is "forty billion, one hundred seventy million, two hundred three thousand, thirty-one".