31421044232331 has 64 divisors (see below), whose sum is σ = 45426055449600. Its totient is φ = 19204326236160.

The previous prime is 31421044232327. The next prime is 31421044232363. The reversal of 31421044232331 is 13323244012413.

It is not a de Polignac number, because 31421044232331 - 2² = 31421044232327 is a prime.

It is a super-2 number, since 2×31421044232331² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31421044232292 and 31421044232301.

It is not an unprimeable number, because it can be changed into a prime (31421044239331) 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 63 ways as a sum of consecutive naturals, for example, 4107859195 + ... + 4107866843.

It is an arithmetic number, because the mean of its divisors is an integer number (709782116400).

Almost surely, 2^{31421044232331} is an apocalyptic number.

31421044232331 is a deficient number, since it is larger than the sum of its proper divisors (14005011217269).

31421044232331 is a wasteful number, since it uses less digits than its factorization.

31421044232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31421044232331 its reverse (13323244012413), we get a palindrome (44744288244744).

The spelling of 31421044232331 in words is "thirty-one trillion, four hundred twenty-one billion, forty-four million, two hundred thirty-two thousand, three hundred thirty-one".