47111431 has 4 divisors (see below), whose sum is σ = 49591000. Its totient is φ = 44631864.

The previous prime is 47111417. The next prime is 47111489. The reversal of 47111431 is 13411174.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47111431 - 2⁷ = 47111303 is a prime.

It is a super-2 number, since 2×47111431² = 4438973861735522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47111731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239756 + ... + 1239793.

It is an arithmetic number, because the mean of its divisors is an integer number (12397750).

Almost surely, 2^47111431 is an apocalyptic number.

47111431 is a deficient number, since it is larger than the sum of its proper divisors (2479569).

47111431 is a wasteful number, since it uses less digits than its factorization.

47111431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479568.

The product of its digits is 336, while the sum is 22.

The square root of 47111431 is about 6863.7767300518. The cubic root of 47111431 is about 361.1675851154.

The spelling of 47111431 in words is "forty-seven million, one hundred eleven thousand, four hundred thirty-one".