31234143424 has 56 divisors (see below), whose sum is σ = 67878307728. Its totient is φ = 14142013440.

The previous prime is 31234143419. The next prime is 31234143427. The reversal of 31234143424 is 42434143213.

It is not an unprimeable number, because it can be changed into a prime (31234143427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94612 + ... + 267244.

It is an arithmetic number, because the mean of its divisors is an integer number (1212112638).

Almost surely, 2^31234143424 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 31234143424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33939153864).

31234143424 is an abundant number, since it is smaller than the sum of its proper divisors (36644164304).

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

31234143424 is a wasteful number, since it uses less digits than its factorization.

31234143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172913 (or 172903 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

Adding to 31234143424 its reverse (42434143213), we get a palindrome (73668286637).

The spelling of 31234143424 in words is "thirty-one billion, two hundred thirty-four million, one hundred forty-three thousand, four hundred twenty-four".