31223443140100 has 36 divisors (see below), whose sum is σ = 67783376493364. Its totient is φ = 12484122900480.

The previous prime is 31223443140053. The next prime is 31223443140151. The reversal of 31223443140100 is 104134432213.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13164808644 + 31210278331456 = 114738^2 + 5586616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65440557 + ... + 65915956.

Almost surely, 2^{31223443140100} is an apocalyptic number.

It is an amenable number.

31223443140100 is an abundant number, since it is smaller than the sum of its proper divisors (36559933353264).

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

31223443140100 is a wasteful number, since it uses less digits than its factorization.

31223443140100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131358904 (or 131358897 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31223443140100 its reverse (104134432213), we get a palindrome (31327577572313).

The spelling of 31223443140100 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred forty-three million, one hundred forty thousand, one hundred".