40277231 has 2 divisors, whose sum is σ = 40277232. Its totient is φ = 40277230.

The previous prime is 40277189. The next prime is 40277243. The reversal of 40277231 is 13277204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40277231 is a prime.

It is a super-2 number, since 2×40277231² = 3244510674054722, 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 40277231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40277431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20138615 + 20138616.

It is an arithmetic number, because the mean of its divisors is an integer number (20138616).

Almost surely, 2^40277231 is an apocalyptic number.

40277231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40277231 is an equidigital number, since it uses as much as digits as its factorization.

40277231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 40277231 is about 6346.4345108100. The cubic root of 40277231 is about 342.7834682387.

The spelling of 40277231 in words is "forty million, two hundred seventy-seven thousand, two hundred thirty-one".