31321203121330 has 8 divisors (see below), whose sum is σ = 56378165618412. Its totient is φ = 12528481248528.

The previous prime is 31321203121319. The next prime is 31321203121421. The reversal of 31321203121330 is 3312130212313.

It can be written as a sum of positive squares in 2 ways, for example, as 30346447755121 + 974755366209 = 5508761^2 + 987297^2 .

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

It is a super-2 number, since 2×31321203121330² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31321203121295 and 31321203121304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566060156057 + ... + 1566060156076.

Almost surely, 2^{31321203121330} is an apocalyptic number.

31321203121330 is a deficient number, since it is larger than the sum of its proper divisors (25056962497082).

31321203121330 is a wasteful number, since it uses less digits than its factorization.

31321203121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132120312140.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31321203121330 its reverse (3312130212313), we get a palindrome (34633333333643).

The spelling of 31321203121330 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred three million, one hundred twenty-one thousand, three hundred thirty".