981136250031 has 8 divisors (see below), whose sum is σ = 1495064761984. Its totient is φ = 560649285720.

The previous prime is 981136250011. The next prime is 981136250041. The reversal of 981136250031 is 130052631189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981136250031 - 2⁹ = 981136249519 is a prime.

It is a super-2 number, since 2×981136250031² (a number of 25 digits) 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 (981136250011) 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 7 ways as a sum of consecutive naturals, for example, 23360386885 + ... + 23360386926.

It is an arithmetic number, because the mean of its divisors is an integer number (186883095248).

Almost surely, 2^981136250031 is an apocalyptic number.

981136250031 is a deficient number, since it is larger than the sum of its proper divisors (513928511953).

981136250031 is a wasteful number, since it uses less digits than its factorization.

981136250031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46720773821.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 981136250031 in words is "nine hundred eighty-one billion, one hundred thirty-six million, two hundred fifty thousand, thirty-one".