31212023130321 has 32 divisors (see below), whose sum is σ = 47571403714560. Its totient is φ = 18018219542400.

The previous prime is 31212023130311. The next prime is 31212023130331. The reversal of 31212023130321 is 12303132021213.

It is an interprime number because it is at equal distance from previous prime (31212023130311) and next prime (31212023130331).

It is not a de Polignac number, because 31212023130321 - 2⁷ = 31212023130193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31212023130291 and 31212023130300.

It is not an unprimeable number, because it can be changed into a prime (31212023130311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85849060 + ... + 86211861.

It is an arithmetic number, because the mean of its divisors is an integer number (1486606366080).

Almost surely, 2^{31212023130321} is an apocalyptic number.

It is an amenable number.

31212023130321 is a deficient number, since it is larger than the sum of its proper divisors (16359380584239).

31212023130321 is a wasteful number, since it uses less digits than its factorization.

31212023130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172061197.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31212023130321 its reverse (12303132021213), we get a palindrome (43515155151534).

The spelling of 31212023130321 in words is "thirty-one trillion, two hundred twelve billion, twenty-three million, one hundred thirty thousand, three hundred twenty-one".