31000220301 has 16 divisors (see below), whose sum is σ = 42122856384. Its totient is φ = 20272372224.

The previous prime is 31000220299. The next prime is 31000220311. The reversal of 31000220301 is 10302200013.

It is a happy number.

It is not a de Polignac number, because 31000220301 - 2¹ = 31000220299 is a prime.

It is a super-2 number, since 2×31000220301² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792925 + ... + 831101.

It is an arithmetic number, because the mean of its divisors is an integer number (2632678524).

Almost surely, 2^31000220301 is an apocalyptic number.

It is an amenable number.

31000220301 is a deficient number, since it is larger than the sum of its proper divisors (11122636083).

31000220301 is a wasteful number, since it uses less digits than its factorization.

31000220301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43340.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31000220301 its reverse (10302200013), we get a palindrome (41302420314).

The spelling of 31000220301 in words is "thirty-one billion, two hundred twenty thousand, three hundred one".