47144731 has 2 divisors, whose sum is σ = 47144732. Its totient is φ = 47144730.

The previous prime is 47144729. The next prime is 47144737. The reversal of 47144731 is 13744174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47144731 - 2¹ = 47144729 is a prime.

It is a super-2 number, since 2×47144731² = 4445251322124722, which contains 22 as substring.

Together with 47144729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 47144693 and 47144702.

It is not a weakly prime, because it can be changed into another prime (47144737) 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, 23572365 + 23572366.

It is an arithmetic number, because the mean of its divisors is an integer number (23572366).

Almost surely, 2^47144731 is an apocalyptic number.

47144731 is a deficient number, since it is larger than the sum of its proper divisors (1).

47144731 is an equidigital number, since it uses as much as digits as its factorization.

47144731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 47144731 is about 6866.2020797527. The cubic root of 47144731 is about 361.2526603493.

The spelling of 47144731 in words is "forty-seven million, one hundred forty-four thousand, seven hundred thirty-one".