31230205422 has 32 divisors (see below), whose sum is σ = 69083038752. Its totient is φ = 9349582464.

The previous prime is 31230205373. The next prime is 31230205429. The reversal of 31230205422 is 22450203213.

It is a junction number, because it is equal to n+sod(n) for n = 31230205392 and 31230205401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230205429) 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, 5407753 + ... + 5413524.

It is an arithmetic number, because the mean of its divisors is an integer number (2158844961).

Almost surely, 2^31230205422 is an apocalyptic number.

31230205422 is an abundant number, since it is smaller than the sum of its proper divisors (37852833330).

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

31230205422 is a wasteful number, since it uses less digits than its factorization.

31230205422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10821332.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 31230205422 its reverse (22450203213), we get a palindrome (53680408635).

The spelling of 31230205422 in words is "thirty-one billion, two hundred thirty million, two hundred five thousand, four hundred twenty-two".