31440300223024 has 160 divisors (see below), whose sum is σ = 76143092815872. Its totient is φ = 12217806720000.

The previous prime is 31440300223009. The next prime is 31440300223067. The reversal of 31440300223024 is 42032200304413.

It is a super-2 number, since 2×31440300223024² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 31440300222983 and 31440300223001.

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, 3345775894 + ... + 3345785290.

Almost surely, 2^{31440300223024} 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 31440300223024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38071546407936).

31440300223024 is an abundant number, since it is smaller than the sum of its proper divisors (44702792592848).

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

31440300223024 is a wasteful number, since it uses less digits than its factorization.

31440300223024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16155 (or 16149 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31440300223024 its reverse (42032200304413), we get a palindrome (73472500527437).

The spelling of 31440300223024 in words is "thirty-one trillion, four hundred forty billion, three hundred million, two hundred twenty-three thousand, twenty-four".