31021414424 has 128 divisors (see below), whose sum is σ = 80001492480. Its totient is φ = 10884326400.

The previous prime is 31021414393. The next prime is 31021414453. The reversal of 31021414424 is 42441412013.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 31021414393 and 31021414402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281087 + ... + 375569.

It is an arithmetic number, because the mean of its divisors is an integer number (625011660).

Almost surely, 2^31021414424 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 31021414424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40000746240).

31021414424 is an abundant number, since it is smaller than the sum of its proper divisors (48980078056).

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

31021414424 is a wasteful number, since it uses less digits than its factorization.

31021414424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94561 (or 94557 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 31021414424 its reverse (42441412013), we get a palindrome (73462826437).

The spelling of 31021414424 in words is "thirty-one billion, twenty-one million, four hundred fourteen thousand, four hundred twenty-four".