47131001 has 4 divisors (see below), whose sum is σ = 49611600. Its totient is φ = 44650404.

The previous prime is 47130983. The next prime is 47131009. The reversal of 47131001 is 10013174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10013174 = 2 ⋅5006587.

It is a cyclic number.

It is not a de Polignac number, because 47131001 - 2¹⁰ = 47129977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47131009) 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, 1240271 + ... + 1240308.

It is an arithmetic number, because the mean of its divisors is an integer number (12402900).

Almost surely, 2^47131001 is an apocalyptic number.

It is an amenable number.

47131001 is a deficient number, since it is larger than the sum of its proper divisors (2480599).

47131001 is a wasteful number, since it uses less digits than its factorization.

47131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480598.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 47131001 is about 6865.2021820191. The cubic root of 47131001 is about 361.2175876380.

Adding to 47131001 its reverse (10013174), we get a palindrome (57144175).

The spelling of 47131001 in words is "forty-seven million, one hundred thirty-one thousand, one".