31520420534314 has 32 divisors (see below), whose sum is σ = 49853693692800. Its totient is φ = 14905351391040.

The previous prime is 31520420534297. The next prime is 31520420534347. The reversal of 31520420534314 is 41343502402513.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137507004 + ... + 137736040.

It is an arithmetic number, because the mean of its divisors is an integer number (1557927927900).

Almost surely, 2^{31520420534314} is an apocalyptic number.

31520420534314 is a deficient number, since it is larger than the sum of its proper divisors (18333273158486).

31520420534314 is a wasteful number, since it uses less digits than its factorization.

31520420534314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235198.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 31520420534314 its reverse (41343502402513), we get a palindrome (72863922936827).

The spelling of 31520420534314 in words is "thirty-one trillion, five hundred twenty billion, four hundred twenty million, five hundred thirty-four thousand, three hundred fourteen".