31210414420 has 96 divisors (see below), whose sum is σ = 70209006336. Its totient is φ = 11625292800.

The previous prime is 31210414373. The next prime is 31210414439. The reversal of 31210414420 is 2441401213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31210414391 and 31210414400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10503535 + ... + 10506505.

It is an arithmetic number, because the mean of its divisors is an integer number (731343816).

Almost surely, 2^31210414420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31210414420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35104503168).

31210414420 is an abundant number, since it is smaller than the sum of its proper divisors (38998591916).

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

31210414420 is a wasteful number, since it uses less digits than its factorization.

31210414420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601 (or 3599 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31210414420 its reverse (2441401213), we get a palindrome (33651815633).

The spelling of 31210414420 in words is "thirty-one billion, two hundred ten million, four hundred fourteen thousand, four hundred twenty".