47347231 has 4 divisors (see below), whose sum is σ = 47550672. Its totient is φ = 47143792.

The previous prime is 47347219. The next prime is 47347241. The reversal of 47347231 is 13274374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13274374 = 2 ⋅6637187.

It is a cyclic number.

It is not a de Polignac number, because 47347231 - 2⁷ = 47347103 is a prime.

It is a super-2 number, since 2×47347231² = 4483520566734722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47347193 and 47347202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47347211) 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, 101371 + ... + 101836.

It is an arithmetic number, because the mean of its divisors is an integer number (11887668).

Almost surely, 2^47347231 is an apocalyptic number.

47347231 is a deficient number, since it is larger than the sum of its proper divisors (203441).

47347231 is a wasteful number, since it uses less digits than its factorization.

47347231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203440.

The product of its digits is 14112, while the sum is 31.

The square root of 47347231 is about 6880.9324222812. The cubic root of 47347231 is about 361.7691491333.

The spelling of 47347231 in words is "forty-seven million, three hundred forty-seven thousand, two hundred thirty-one".