93681631 has 4 divisors (see below), whose sum is σ = 94101952. Its totient is φ = 93261312.

The previous prime is 93681607. The next prime is 93681689. The reversal of 93681631 is 13618639.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13618639 = 107 ⋅127277.

It is a cyclic number.

It is not a de Polignac number, because 93681631 - 2⁷ = 93681503 is a prime.

It is a super-2 number, since 2×93681631² = 17552495973640322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93681131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209826 + ... + 210271.

It is an arithmetic number, because the mean of its divisors is an integer number (23525488).

Almost surely, 2^93681631 is an apocalyptic number.

93681631 is a deficient number, since it is larger than the sum of its proper divisors (420321).

93681631 is a wasteful number, since it uses less digits than its factorization.

93681631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420320.

The product of its digits is 23328, while the sum is 37.

The square root of 93681631 is about 9678.9271616228. The cubic root of 93681631 is about 454.1696904923.

The spelling of 93681631 in words is "ninety-three million, six hundred eighty-one thousand, six hundred thirty-one".