31220224140430 has 32 divisors (see below), whose sum is σ = 62471436104448. Its totient is φ = 11155613587200.

The previous prime is 31220224140401. The next prime is 31220224140437. The reversal of 31220224140430 is 3404142202213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220224140437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3873472911 + ... + 3873480970.

It is an arithmetic number, because the mean of its divisors is an integer number (1952232378264).

Almost surely, 2^{31220224140430} is an apocalyptic number.

31220224140430 is an abundant number, since it is smaller than the sum of its proper divisors (31251211964018).

31220224140430 is a wasteful number, since it uses less digits than its factorization.

31220224140430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746953932.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31220224140430 its reverse (3404142202213), we get a palindrome (34624366342643).

The spelling of 31220224140430 in words is "thirty-one trillion, two hundred twenty billion, two hundred twenty-four million, one hundred forty thousand, four hundred thirty".