47151731 has 8 divisors (see below), whose sum is σ = 51508224. Its totient is φ = 42806920.

The previous prime is 47151707. The next prime is 47151733. The reversal of 47151731 is 13715174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47151731 is a prime.

It is a super-2 number, since 2×47151731² = 4446571472592722, 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 = 47151694 and 47151703.

It is not an unprimeable number, because it can be changed into a prime (47151733) 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 in 7 ways as a sum of consecutive naturals, for example, 7010 + ... + 11976.

It is an arithmetic number, because the mean of its divisors is an integer number (6438528).

Almost surely, 2^47151731 is an apocalyptic number.

47151731 is a deficient number, since it is larger than the sum of its proper divisors (4356493).

47151731 is a wasteful number, since it uses less digits than its factorization.

47151731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841.

The product of its digits is 2940, while the sum is 29.

The square root of 47151731 is about 6866.7118040588. The cubic root of 47151731 is about 361.2705389359.

It can be divided in two parts, 4715173 and 1, that added together give a palindrome (4715174).

The spelling of 47151731 in words is "forty-seven million, one hundred fifty-one thousand, seven hundred thirty-one".