31421221034232 has 16 divisors (see below), whose sum is σ = 78553052585640. Its totient is φ = 10473740344736.

The previous prime is 31421221034227. The next prime is 31421221034303. The reversal of 31421221034232 is 23243012212413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31421221034232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654608771523 + ... + 654608771570.

Almost surely, 2^{31421221034232} is an apocalyptic number.

It is an amenable number.

31421221034232 is an abundant number, since it is smaller than the sum of its proper divisors (47131831551408).

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

31421221034232 is a wasteful number, since it uses less digits than its factorization.

31421221034232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309217543102 (or 1309217543098 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 31421221034232 its reverse (23243012212413), we get a palindrome (54664233246645).

The spelling of 31421221034232 in words is "thirty-one trillion, four hundred twenty-one billion, two hundred twenty-one million, thirty-four thousand, two hundred thirty-two".