31101149985 has 16 divisors (see below), whose sum is σ = 49766120064. Its totient is φ = 16585853312.

The previous prime is 31101149929. The next prime is 31101150011. The reversal of 31101149985 is 58994110113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31101149985 - 2⁷ = 31101149857 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 104629 + ... + 270461.

It is an arithmetic number, because the mean of its divisors is an integer number (3110382504).

Almost surely, 2^31101149985 is an apocalyptic number.

It is an amenable number.

31101149985 is a deficient number, since it is larger than the sum of its proper divisors (18664970079).

31101149985 is a wasteful number, since it uses less digits than its factorization.

31101149985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178344.

The product of its (nonzero) digits is 38880, while the sum is 42.

The spelling of 31101149985 in words is "thirty-one billion, one hundred one million, one hundred forty-nine thousand, nine hundred eighty-five".