31200420362255 has 16 divisors (see below), whose sum is σ = 37721006792064. Its totient is φ = 24773404419840.

The previous prime is 31200420362233. The next prime is 31200420362261. The reversal of 31200420362255 is 55226302400213.

It is a de Polignac number, because none of the positive numbers 2^k-31200420362255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770432 + ... + 7936901.

It is an arithmetic number, because the mean of its divisors is an integer number (2357562924504).

Almost surely, 2^{31200420362255} is an apocalyptic number.

31200420362255 is a deficient number, since it is larger than the sum of its proper divisors (6520586429809).

31200420362255 is a wasteful number, since it uses less digits than its factorization.

31200420362255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712706.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 31200420362255 its reverse (55226302400213), we get a palindrome (86426722762468).

The spelling of 31200420362255 in words is "thirty-one trillion, two hundred billion, four hundred twenty million, three hundred sixty-two thousand, two hundred fifty-five".