31540044324 has 12 divisors (see below), whose sum is σ = 73593436784. Its totient is φ = 10513348104.

The previous prime is 31540044323. The next prime is 31540044337. The reversal of 31540044324 is 42344004513.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31540044291 and 31540044300.

It is not an unprimeable number, because it can be changed into a prime (31540044323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314168502 + ... + 1314168525.

Almost surely, 2^31540044324 is an apocalyptic number.

It is an amenable number.

31540044324 is an abundant number, since it is smaller than the sum of its proper divisors (42053392460).

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

31540044324 is a wasteful number, since it uses less digits than its factorization.

31540044324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628337034 (or 2628337032 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 31540044324 its reverse (42344004513), we get a palindrome (73884048837).

The spelling of 31540044324 in words is "thirty-one billion, five hundred forty million, forty-four thousand, three hundred twenty-four".