31189840101 has 24 divisors (see below), whose sum is σ = 53751200640. Its totient is φ = 17822765016.

The previous prime is 31189839983. The next prime is 31189840111. The reversal of 31189840101 is 10104898113.

It is not a de Polignac number, because 31189840101 - 2¹⁷ = 31189709029 is a prime.

It is a super-2 number, since 2×31189840101² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31189840111) 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 23 ways as a sum of consecutive naturals, for example, 11786221 + ... + 11788866.

It is an arithmetic number, because the mean of its divisors is an integer number (2239633360).

Almost surely, 2^31189840101 is an apocalyptic number.

It is an amenable number.

31189840101 is a deficient number, since it is larger than the sum of its proper divisors (22561360539).

31189840101 is a wasteful number, since it uses less digits than its factorization.

31189840101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23575110 (or 23575097 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 31189840101 in words is "thirty-one billion, one hundred eighty-nine million, eight hundred forty thousand, one hundred one".