31211230130 has 8 divisors (see below), whose sum is σ = 56180214252. Its totient is φ = 12484492048.

The previous prime is 31211230129. The next prime is 31211230133. The reversal of 31211230130 is 3103211213.

It can be written as a sum of positive squares in 2 ways, for example, as 29750385289 + 1460844841 = 172483^2 + 38221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31211230099 and 31211230108.

It is not an unprimeable number, because it can be changed into a prime (31211230133) 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, 1560561497 + ... + 1560561516.

Almost surely, 2^31211230130 is an apocalyptic number.

31211230130 is a deficient number, since it is larger than the sum of its proper divisors (24968984122).

31211230130 is a wasteful number, since it uses less digits than its factorization.

31211230130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121123020.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31211230130 its reverse (3103211213), we get a palindrome (34314441343).

The spelling of 31211230130 in words is "thirty-one billion, two hundred eleven million, two hundred thirty thousand, one hundred thirty".