31330221001135 has 64 divisors (see below), whose sum is σ = 45538444062720. Its totient is φ = 20234383303680.

The previous prime is 31330221001133. The next prime is 31330221001181. The reversal of 31330221001135 is 53110012203313.

It is not a de Polignac number, because 31330221001135 - 2¹ = 31330221001133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330221001133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 379778862 + ... + 379861348.

It is an arithmetic number, because the mean of its divisors is an integer number (711538188480).

Almost surely, 2^{31330221001135} is an apocalyptic number.

31330221001135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31330221001135 is a deficient number, since it is larger than the sum of its proper divisors (14208223061585).

31330221001135 is a wasteful number, since it uses less digits than its factorization.

31330221001135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91696.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 31330221001135 its reverse (53110012203313), we get a palindrome (84440233204448).

The spelling of 31330221001135 in words is "thirty-one trillion, three hundred thirty billion, two hundred twenty-one million, one thousand, one hundred thirty-five".