31344411420 has 144 divisors (see below), whose sum is σ = 109015915008. Its totient is φ = 7141011840.

The previous prime is 31344411401. The next prime is 31344411433. The reversal of 31344411420 is 2411444313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346305 + ... + 427335.

Almost surely, 2^31344411420 is an apocalyptic number.

31344411420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31344411420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54507957504).

31344411420 is an abundant number, since it is smaller than the sum of its proper divisors (77671503588).

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

31344411420 is a wasteful number, since it uses less digits than its factorization.

31344411420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81360 (or 81355 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 31344411420 its reverse (2411444313), we get a palindrome (33755855733).

The spelling of 31344411420 in words is "thirty-one billion, three hundred forty-four million, four hundred eleven thousand, four hundred twenty".