31234451424 has 192 divisors, whose sum is σ = 99691119360. Its totient is φ = 8439275520.

The previous prime is 31234451333. The next prime is 31234451461. The reversal of 31234451424 is 42415443213.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 295302 + ... + 386874.

It is an arithmetic number, because the mean of its divisors is an integer number (519224580).

Almost surely, 2^31234451424 is an apocalyptic number.

31234451424 is a gapful number since it is divisible by the number (34) 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 31234451424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49845559680).

31234451424 is an abundant number, since it is smaller than the sum of its proper divisors (68456667936).

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

31234451424 is a wasteful number, since it uses less digits than its factorization.

31234451424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91633 (or 91625 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

Adding to 31234451424 its reverse (42415443213), we get a palindrome (73649894637).

The spelling of 31234451424 in words is "thirty-one billion, two hundred thirty-four million, four hundred fifty-one thousand, four hundred twenty-four".