31032012220311 has 16 divisors (see below), whose sum is σ = 43553820492800. Its totient is φ = 19599112003968.

The previous prime is 31032012220267. The next prime is 31032012220331. The reversal of 31032012220311 is 11302221023013.

It is not a de Polignac number, because 31032012220311 - 2⁹ = 31032012219799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032012220331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36329535 + ... + 37173903.

It is an arithmetic number, because the mean of its divisors is an integer number (2722113780800).

Almost surely, 2^{31032012220311} is an apocalyptic number.

31032012220311 is a deficient number, since it is larger than the sum of its proper divisors (12521808272489).

31032012220311 is a wasteful number, since it uses less digits than its factorization.

31032012220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489158.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31032012220311 its reverse (11302221023013), we get a palindrome (42334233243324).

The spelling of 31032012220311 in words is "thirty-one trillion, thirty-two billion, twelve million, two hundred twenty thousand, three hundred eleven".