40277431 has 2 divisors, whose sum is σ = 40277432. Its totient is φ = 40277430.

The previous prime is 40277417. The next prime is 40277443. The reversal of 40277431 is 13477204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40277431 - 2⁵ = 40277399 is a prime.

It is a super-2 number, since 2×40277431² = 3244542895919522, which contains 22 as substring.

It is equal to p_2449504 and since 40277431 and 2449504 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40277431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40277411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20138715 + 20138716.

It is an arithmetic number, because the mean of its divisors is an integer number (20138716).

Almost surely, 2^40277431 is an apocalyptic number.

40277431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40277431 is an equidigital number, since it uses as much as digits as its factorization.

40277431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 40277431 is about 6346.4502676693. The cubic root of 40277431 is about 342.7840356112.

The spelling of 40277431 in words is "forty million, two hundred seventy-seven thousand, four hundred thirty-one".