31011281995149 has 12 divisors (see below), whose sum is σ = 45886612383612. Its totient is φ = 20169939508800.

The previous prime is 31011281995139. The next prime is 31011281995159. The reversal of 31011281995149 is 94159918211013.

31011281995149 is a `hidden beast` number, since 3 + 1 + 0 + 11 + 28 + 1 + 99 + 514 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (31011281995139) and next prime (31011281995159).

It can be written as a sum of positive squares in 2 ways, for example, as 13420865902500 + 17590416092649 = 3663450^2 + 4194093^2 .

It is not a de Polignac number, because 31011281995149 - 2²⁸ = 31011013559693 is a prime.

It is a super-2 number, since 2×31011281995149² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31011281995095 and 31011281995104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011281995139) 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 11 ways as a sum of consecutive naturals, for example, 42020706942 + ... + 42020707679.

It is an arithmetic number, because the mean of its divisors is an integer number (3823884365301).

Almost surely, 2^{31011281995149} is an apocalyptic number.

It is an amenable number.

31011281995149 is a deficient number, since it is larger than the sum of its proper divisors (14875330388463).

31011281995149 is a wasteful number, since it uses less digits than its factorization.

31011281995149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84041414668 (or 84041414665 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 54.

The spelling of 31011281995149 in words is "thirty-one trillion, eleven billion, two hundred eighty-one million, nine hundred ninety-five thousand, one hundred forty-nine".