48691631 has 4 divisors (see below), whose sum is σ = 48723432. Its totient is φ = 48659832.

The previous prime is 48691627. The next prime is 48691637. The reversal of 48691631 is 13619684.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 48691631 - 2² = 48691627 is a prime.

It is a super-2 number, since 2×48691631² = 4741749858880322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48691637) 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, 13481 + ... + 16706.

It is an arithmetic number, because the mean of its divisors is an integer number (12180858).

Almost surely, 2^48691631 is an apocalyptic number.

48691631 is a deficient number, since it is larger than the sum of its proper divisors (31801).

48691631 is a wasteful number, since it uses less digits than its factorization.

48691631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31800.

The product of its digits is 31104, while the sum is 38.

The square root of 48691631 is about 6977.9388790674. The cubic root of 48691631 is about 365.1613248206.

The spelling of 48691631 in words is "forty-eight million, six hundred ninety-one thousand, six hundred thirty-one".