107987631 has 4 divisors (see below), whose sum is σ = 143983512. Its totient is φ = 71991752.

The previous prime is 107987617. The next prime is 107987639. The reversal of 107987631 is 136789701.

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 107987631 - 2¹³ = 107979439 is a prime.

It is a super-2 number, since 2×107987631² = 23322656897984322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107987639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17997936 + ... + 17997941.

It is an arithmetic number, because the mean of its divisors is an integer number (35995878).

Almost surely, 2^107987631 is an apocalyptic number.

107987631 is a deficient number, since it is larger than the sum of its proper divisors (35995881).

107987631 is an equidigital number, since it uses as much as digits as its factorization.

107987631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35995880.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 107987631 is about 10391.7097245833. The cubic root of 107987631 is about 476.2021347449.

The spelling of 107987631 in words is "one hundred seven million, nine hundred eighty-seven thousand, six hundred thirty-one".