31520423302412 has 24 divisors (see below), whose sum is σ = 60175516721040. Its totient is φ = 14327426293760.

The previous prime is 31520423302393. The next prime is 31520423302421. The reversal of 31520423302412 is 21420332402513.

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, 21057164 + ... + 22504332.

It is an arithmetic number, because the mean of its divisors is an integer number (2507313196710).

Almost surely, 2^{31520423302412} is an apocalyptic number.

It is an amenable number.

31520423302412 is a deficient number, since it is larger than the sum of its proper divisors (28655093418628).

31520423302412 is a wasteful number, since it uses less digits than its factorization.

31520423302412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942201 (or 1942199 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 31520423302412 its reverse (21420332402513), we get a palindrome (52940755704925).

The spelling of 31520423302412 in words is "thirty-one trillion, five hundred twenty billion, four hundred twenty-three million, three hundred two thousand, four hundred twelve".