31240041213344 has 24 divisors (see below), whose sum is σ = 61506030801600. Its totient is φ = 15619461962176.

The previous prime is 31240041213317. The next prime is 31240041213349. The reversal of 31240041213344 is 44331214004213.

It is a super-2 number, since 2×31240041213344² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 31240041213344.

It is not an unprimeable number, because it can be changed into a prime (31240041213349) 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, 16548194 + ... + 18339105.

It is an arithmetic number, because the mean of its divisors is an integer number (2562751283400).

Almost surely, 2^{31240041213344} is an apocalyptic number.

It is an amenable number.

31240041213344 is a deficient number, since it is larger than the sum of its proper divisors (30265989588256).

31240041213344 is a wasteful number, since it uses less digits than its factorization.

31240041213344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34915292 (or 34915284 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31240041213344 its reverse (44331214004213), we get a palindrome (75571255217557).

The spelling of 31240041213344 in words is "thirty-one trillion, two hundred forty billion, forty-one million, two hundred thirteen thousand, three hundred forty-four".