31204421430 has 128 divisors (see below), whose sum is σ = 97024435200. Its totient is φ = 6237264384.

The previous prime is 31204421429. The next prime is 31204421447. The reversal of 31204421430 is 3412440213.

It is a self number, because there is not a number n which added to its sum of digits gives 31204421430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 248925 + ... + 352664.

It is an arithmetic number, because the mean of its divisors is an integer number (758003400).

Almost surely, 2^31204421430 is an apocalyptic number.

31204421430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31204421430 is an abundant number, since it is smaller than the sum of its proper divisors (65820013770).

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

31204421430 is a wasteful number, since it uses less digits than its factorization.

31204421430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601638.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31204421430 its reverse (3412440213), we get a palindrome (34616861643).

The spelling of 31204421430 in words is "thirty-one billion, two hundred four million, four hundred twenty-one thousand, four hundred thirty".