31434324420 has 24 divisors (see below), whose sum is σ = 88016108544. Its totient is φ = 8382486496.

The previous prime is 31434324391. The next prime is 31434324421. The reversal of 31434324420 is 2442343413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (31434324421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261952644 + ... + 261952763.

It is an arithmetic number, because the mean of its divisors is an integer number (3667337856).

Almost surely, 2^31434324420 is an apocalyptic number.

31434324420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31434324420 is an abundant number, since it is smaller than the sum of its proper divisors (56581784124).

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

31434324420 is a wasteful number, since it uses less digits than its factorization.

31434324420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523905419 (or 523905417 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 31434324420 its reverse (2442343413), we get a palindrome (33876667833).

The spelling of 31434324420 in words is "thirty-one billion, four hundred thirty-four million, three hundred twenty-four thousand, four hundred twenty".