31112323240000 has 70 divisors (see below), whose sum is σ = 77148450229334. Its totient is φ = 12444929280000.

The previous prime is 31112323239971. The next prime is 31112323240003. The reversal of 31112323240000 is 4232321113.

It can be written as a sum of positive squares in 5 ways, for example, as 12773647552576 + 18338675687424 = 3574024^2 + 4282368^2 .

It is not an unprimeable number, because it can be changed into a prime (31112323240003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 388864041 + ... + 388944040.

Almost surely, 2^{31112323240000} is an apocalyptic number.

It is an amenable number.

31112323240000 is an abundant number, since it is smaller than the sum of its proper divisors (46036126989334).

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

31112323240000 is an frugal number, since it uses more digits than its factorization.

31112323240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777808113 (or 777808088 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31112323240000 its reverse (4232321113), we get a palindrome (31116555561113).

The spelling of 31112323240000 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty-three million, two hundred forty thousand".