31230034100 has 18 divisors (see below), whose sum is σ = 67769174214. Its totient is φ = 12492013600.

The previous prime is 31230034081. The next prime is 31230034139. The reversal of 31230034100 is 143003213.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10921504036 + 20308530064 = 104506^2 + 142508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156150071 + ... + 156150270.

It is an arithmetic number, because the mean of its divisors is an integer number (3764954123).

Almost surely, 2^31230034100 is an apocalyptic number.

It is an amenable number.

31230034100 is an abundant number, since it is smaller than the sum of its proper divisors (36539140114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31230034100 is a wasteful number, since it uses less digits than its factorization.

31230034100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312300355 (or 312300348 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31230034100 its reverse (143003213), we get a palindrome (31373037313).

The spelling of 31230034100 in words is "thirty-one billion, two hundred thirty million, thirty-four thousand, one hundred".