31224323040 has 48 divisors (see below), whose sum is σ = 98356619088. Its totient is φ = 8326486016.

The previous prime is 31224323023. The next prime is 31224323071. The reversal of 31224323040 is 4032342213.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a self number, because there is not a number n which added to its sum of digits gives 31224323040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32524857 + ... + 32525816.

It is an arithmetic number, because the mean of its divisors is an integer number (2049096231).

Almost surely, 2^31224323040 is an apocalyptic number.

31224323040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31224323040 is an abundant number, since it is smaller than the sum of its proper divisors (67132296048).

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

31224323040 is a wasteful number, since it uses less digits than its factorization.

31224323040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65050691 (or 65050683 counting only the distinct ones).

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

Adding to 31224323040 its reverse (4032342213), we get a palindrome (35256665253).

The spelling of 31224323040 in words is "thirty-one billion, two hundred twenty-four million, three hundred twenty-three thousand, forty".