31421444334 has 48 divisors (see below), whose sum is σ = 74132620416. Its totient is φ = 8851105200.

The previous prime is 31421444333. The next prime is 31421444371. The reversal of 31421444334 is 43344412413.

It is a junction number, because it is equal to n+sod(n) for n = 31421444295 and 31421444304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421444333) 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 23 ways as a sum of consecutive naturals, for example, 731772 + ... + 773519.

It is an arithmetic number, because the mean of its divisors is an integer number (1544429592).

Almost surely, 2^31421444334 is an apocalyptic number.

31421444334 is an abundant number, since it is smaller than the sum of its proper divisors (42711176082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31421444334 is a wasteful number, since it uses less digits than its factorization.

31421444334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505381 (or 1505374 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 31421444334 its reverse (43344412413), we get a palindrome (74765856747).

The spelling of 31421444334 in words is "thirty-one billion, four hundred twenty-one million, four hundred forty-four thousand, three hundred thirty-four".