47957431 has 2 divisors, whose sum is σ = 47957432. Its totient is φ = 47957430.

The previous prime is 47957417. The next prime is 47957453. The reversal of 47957431 is 13475974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47957431 - 2⁷ = 47957303 is a prime.

It is a super-2 number, since 2×47957431² = 4599830376239522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2885764 and since 47957431 and 2885764 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47957401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23978715 + 23978716.

It is an arithmetic number, because the mean of its divisors is an integer number (23978716).

Almost surely, 2^47957431 is an apocalyptic number.

47957431 is a deficient number, since it is larger than the sum of its proper divisors (1).

47957431 is an equidigital number, since it uses as much as digits as its factorization.

47957431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 47957431 is about 6925.1303958843. The cubic root of 47957431 is about 363.3166520599.

The spelling of 47957431 in words is "forty-seven million, nine hundred fifty-seven thousand, four hundred thirty-one".