31020013220132 has 6 divisors (see below), whose sum is σ = 54285023135238. Its totient is φ = 15510006610064.

The previous prime is 31020013220111. The next prime is 31020013220159. The reversal of 31020013220132 is 23102231002013.

It can be written as a sum of positive squares in only one way, i.e., 30809537801956 + 210475418176 = 5550634^2 + 458776^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3877501652513 + ... + 3877501652520.

It is an arithmetic number, because the mean of its divisors is an integer number (9047503855873).

Almost surely, 2^{31020013220132} is an apocalyptic number.

It is an amenable number.

31020013220132 is a deficient number, since it is larger than the sum of its proper divisors (23265009915106).

31020013220132 is a wasteful number, since it uses less digits than its factorization.

31020013220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755003305037 (or 7755003305035 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31020013220132 its reverse (23102231002013), we get a palindrome (54122244222145).

The spelling of 31020013220132 in words is "thirty-one trillion, twenty billion, thirteen million, two hundred twenty thousand, one hundred thirty-two".