31005621334141 has 4 divisors (see below), whose sum is σ = 31006717625952. Its totient is φ = 31004525042332.

The previous prime is 31005621334087. The next prime is 31005621334189. The reversal of 31005621334141 is 14143312650013.

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.

It is a cyclic number.

It is not a de Polignac number, because 31005621334141 - 2²⁵ = 31005587779709 is a prime.

It is a super-2 number, since 2×31005621334141² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31005621334097 and 31005621334106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31005621334841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548103481 + ... + 548160046.

It is an arithmetic number, because the mean of its divisors is an integer number (7751679406488).

Almost surely, 2^{31005621334141} is an apocalyptic number.

It is an amenable number.

31005621334141 is a deficient number, since it is larger than the sum of its proper divisors (1096291811).

31005621334141 is a wasteful number, since it uses less digits than its factorization.

31005621334141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096291810.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 31005621334141 its reverse (14143312650013), we get a palindrome (45148933984154).

The spelling of 31005621334141 in words is "thirty-one trillion, five billion, six hundred twenty-one million, three hundred thirty-four thousand, one hundred forty-one".