47961831 has 8 divisors (see below), whose sum is σ = 66729600. Its totient is φ = 30584312.

The previous prime is 47961827. The next prime is 47961863. The reversal of 47961831 is 13816974.

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

It is a cyclic number.

It is not a de Polignac number, because 47961831 - 2² = 47961827 is a prime.

It is a super-2 number, since 2×47961831² = 4600674465745122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47961831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47961821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347481 + ... + 347618.

It is an arithmetic number, because the mean of its divisors is an integer number (8341200).

Almost surely, 2^47961831 is an apocalyptic number.

47961831 is a deficient number, since it is larger than the sum of its proper divisors (18767769).

47961831 is a wasteful number, since it uses less digits than its factorization.

47961831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695125.

The product of its digits is 36288, while the sum is 39.

The square root of 47961831 is about 6925.4480721467. The cubic root of 47961831 is about 363.3277629162.

The spelling of 47961831 in words is "forty-seven million, nine hundred sixty-one thousand, eight hundred thirty-one".