31012015531141 has 4 divisors (see below), whose sum is σ = 31012027164832. Its totient is φ = 31012003897452.

The previous prime is 31012015531127. The next prime is 31012015531163. The reversal of 31012015531141 is 14113551021013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31012015531141 - 2¹⁹ = 31012015006853 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 (31012015531111) 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 3 ways as a sum of consecutive naturals, for example, 387856 + ... + 7885078.

It is an arithmetic number, because the mean of its divisors is an integer number (7753006791208).

Almost surely, 2^{31012015531141} is an apocalyptic number.

It is an amenable number.

31012015531141 is a deficient number, since it is larger than the sum of its proper divisors (11633691).

31012015531141 is an equidigital number, since it uses as much as digits as its factorization.

31012015531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11633690.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 31012015531141 its reverse (14113551021013), we get a palindrome (45125566552154).

The spelling of 31012015531141 in words is "thirty-one trillion, twelve billion, fifteen million, five hundred thirty-one thousand, one hundred forty-one".