31121101030 has 16 divisors (see below), whose sum is σ = 56023919424. Its totient is φ = 12447120960.

The previous prime is 31121101019. The next prime is 31121101031. The reversal of 31121101030 is 3010112113.

It is a self number, because there is not a number n which added to its sum of digits gives 31121101030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121101031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62862 + ... + 257281.

It is an arithmetic number, because the mean of its divisors is an integer number (3501494964).

Almost surely, 2^31121101030 is an apocalyptic number.

31121101030 is a deficient number, since it is larger than the sum of its proper divisors (24902818394).

31121101030 is a wasteful number, since it uses less digits than its factorization.

31121101030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329871.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31121101030 its reverse (3010112113), we get a palindrome (34131213143).

The spelling of 31121101030 in words is "thirty-one billion, one hundred twenty-one million, one hundred one thousand, thirty".