31302121101 has 16 divisors (see below), whose sum is σ = 44727828864. Its totient is φ = 19421290944.

The previous prime is 31302121069. The next prime is 31302121111. The reversal of 31302121101 is 10112120313.

It is a happy number.

It is not a de Polignac number, because 31302121101 - 2⁵ = 31302121069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6127906 + ... + 6133011.

It is an arithmetic number, because the mean of its divisors is an integer number (2795489304).

Almost surely, 2^31302121101 is an apocalyptic number.

It is an amenable number.

31302121101 is a deficient number, since it is larger than the sum of its proper divisors (13425707763).

31302121101 is a wasteful number, since it uses less digits than its factorization.

31302121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260980.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31302121101 its reverse (10112120313), we get a palindrome (41414241414).

It can be divided in two parts, 3130212 and 1101, that added together give a palindrome (3131313).

The spelling of 31302121101 in words is "thirty-one billion, three hundred two million, one hundred twenty-one thousand, one hundred one".