31144031020141 has 8 divisors (see below), whose sum is σ = 33539769348120. Its totient is φ = 28748298925632.

The previous prime is 31144031020139. The next prime is 31144031020153. The reversal of 31144031020141 is 14102013044113.

It can be written as a sum of positive squares in 4 ways, for example, as 214527375241 + 30929503644900 = 463171^2 + 5561430^2 .

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

It is not a de Polignac number, because 31144031020141 - 2¹ = 31144031020139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144031020841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17034771 + ... + 18774223.

It is an arithmetic number, because the mean of its divisors is an integer number (4192471168515).

Almost surely, 2^{31144031020141} is an apocalyptic number.

It is an amenable number.

31144031020141 is a deficient number, since it is larger than the sum of its proper divisors (2395738327979).

31144031020141 is a wasteful number, since it uses less digits than its factorization.

31144031020141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116735.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 31144031020141 its reverse (14102013044113), we get a palindrome (45246044064254).

The spelling of 31144031020141 in words is "thirty-one trillion, one hundred forty-four billion, thirty-one million, twenty thousand, one hundred forty-one".