31423000344 has 64 divisors (see below), whose sum is σ = 81556092000. Its totient is φ = 10077096960.

The previous prime is 31423000339. The next prime is 31423000381. The reversal of 31423000344 is 44300032413.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115242 + ... + 275910.

Almost surely, 2^31423000344 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 31423000344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40778046000).

31423000344 is an abundant number, since it is smaller than the sum of its proper divisors (50133091656).

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

31423000344 is a wasteful number, since it uses less digits than its factorization.

31423000344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160988 (or 160984 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31423000344 its reverse (44300032413), we get a palindrome (75723032757).

The spelling of 31423000344 in words is "thirty-one billion, four hundred twenty-three million, three hundred forty-four", and thus it is an aban number.