47131308 has 84 divisors (see below), whose sum is σ = 141390480. Its totient is φ = 13460256.

The previous prime is 47131307. The next prime is 47131313. The reversal of 47131308 is 80313174.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (47131307) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 19258 + ... + 21566.

It is an arithmetic number, because the mean of its divisors is an integer number (1683220).

Almost surely, 2^47131308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47131308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70695240).

47131308 is an abundant number, since it is smaller than the sum of its proper divisors (94259172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47131308 is a wasteful number, since it uses less digits than its factorization.

47131308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 47131308 is about 6865.2245411203. The cubic root of 47131308 is about 361.2183719312.

The spelling of 47131308 in words is "forty-seven million, one hundred thirty-one thousand, three hundred eight".