40170931 has 2 divisors, whose sum is σ = 40170932. Its totient is φ = 40170930.

The previous prime is 40170919. The next prime is 40170943. The reversal of 40170931 is 13907104.

It is a balanced prime because it is at equal distance from previous prime (40170919) and next prime (40170943).

It is a cyclic number.

It is not a de Polignac number, because 40170931 - 2⁷ = 40170803 is a prime.

It is a super-2 number, since 2×40170931² = 3227407394813522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40170896 and 40170905.

It is not a weakly prime, because it can be changed into another prime (40170961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20085465 + 20085466.

It is an arithmetic number, because the mean of its divisors is an integer number (20085466).

Almost surely, 2^40170931 is an apocalyptic number.

40170931 is a deficient number, since it is larger than the sum of its proper divisors (1).

40170931 is an equidigital number, since it uses as much as digits as its factorization.

40170931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 40170931 is about 6338.0541966758. The cubic root of 40170931 is about 342.4816435719.

The spelling of 40170931 in words is "forty million, one hundred seventy thousand, nine hundred thirty-one".