31452520221412 has 24 divisors (see below), whose sum is σ = 56225674090656. Its totient is φ = 15391583462208.

The previous prime is 31452520221359. The next prime is 31452520221433. The reversal of 31452520221412 is 21412202525413.

It is a super-2 number, since 2×31452520221412² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442658433 + ... + 442729480.

It is an arithmetic number, because the mean of its divisors is an integer number (2342736420444).

Almost surely, 2^{31452520221412} is an apocalyptic number.

It is an amenable number.

31452520221412 is a deficient number, since it is larger than the sum of its proper divisors (24773153869244).

31452520221412 is a wasteful number, since it uses less digits than its factorization.

31452520221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885388107 (or 885388105 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 31452520221412 its reverse (21412202525413), we get a palindrome (52864722746825).

The spelling of 31452520221412 in words is "thirty-one trillion, four hundred fifty-two billion, five hundred twenty million, two hundred twenty-one thousand, four hundred twelve".