31230030101 has 4 divisors (see below), whose sum is σ = 31393538304. Its totient is φ = 31066521900.

The previous prime is 31230030089. The next prime is 31230030113. The reversal of 31230030101 is 10103003213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10103003213 = 137 ⋅73744549.

It is an interprime number because it is at equal distance from previous prime (31230030089) and next prime (31230030113).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31230030101 is a prime.

It is a super-3 number, since 3×31230030101³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230030001) 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 3 ways as a sum of consecutive naturals, for example, 81753815 + ... + 81754196.

It is an arithmetic number, because the mean of its divisors is an integer number (7848384576).

Almost surely, 2^31230030101 is an apocalyptic number.

It is an amenable number.

31230030101 is a deficient number, since it is larger than the sum of its proper divisors (163508203).

31230030101 is a wasteful number, since it uses less digits than its factorization.

31230030101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163508202.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31230030101 its reverse (10103003213), we get a palindrome (41333033314).

The spelling of 31230030101 in words is "thirty-one billion, two hundred thirty million, thirty thousand, one hundred one".