48181931 has 8 divisors (see below), whose sum is σ = 55486464. Its totient is φ = 40982760.

The previous prime is 48181811. The next prime is 48181933. The reversal of 48181931 is 13918184.

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

It is a de Polignac number, because none of the positive numbers 2^k-48181931 is a prime.

It is a super-2 number, since 2×48181931² = 4642996949777522, 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 = 48181891 and 48181900.

It is not an unprimeable number, because it can be changed into a prime (48181933) 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, 25355 + ... + 27188.

It is an arithmetic number, because the mean of its divisors is an integer number (6935808).

Almost surely, 2^48181931 is an apocalyptic number.

48181931 is a deficient number, since it is larger than the sum of its proper divisors (7304533).

48181931 is a wasteful number, since it uses less digits than its factorization.

48181931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52681.

The product of its digits is 6912, while the sum is 35.

The square root of 48181931 is about 6941.3205515954. The cubic root of 48181931 is about 363.8826932505.

The spelling of 48181931 in words is "forty-eight million, one hundred eighty-one thousand, nine hundred thirty-one".