31000223101 has 4 divisors (see below), whose sum is σ = 32348058912. Its totient is φ = 29652387292.

The previous prime is 31000223083. The next prime is 31000223117. The reversal of 31000223101 is 10132200013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31000223101 - 2⁵ = 31000223069 is a prime.

It is a super-2 number, since 2×31000223101² (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 (31000223171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 673917871 + ... + 673917916.

It is an arithmetic number, because the mean of its divisors is an integer number (8087014728).

Almost surely, 2^31000223101 is an apocalyptic number.

It is an amenable number.

31000223101 is a deficient number, since it is larger than the sum of its proper divisors (1347835811).

31000223101 is a wasteful number, since it uses less digits than its factorization.

31000223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347835810.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31000223101 its reverse (10132200013), we get a palindrome (41132423114).

The spelling of 31000223101 in words is "thirty-one billion, two hundred twenty-three thousand, one hundred one".