312213302140331 has 4 divisors (see below), whose sum is σ = 312367329425112. Its totient is φ = 312059274855552.

The previous prime is 312213302140283. The next prime is 312213302140343. The reversal of 312213302140331 is 133041203312213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312213302140331 - 2¹⁰ = 312213302139307 is a prime.

It is a super-2 number, since 2×312213302140331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312213302140294 and 312213302140303.

It is not an unprimeable number, because it can be changed into a prime (312213302140031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77013639350 + ... + 77013643403.

It is an arithmetic number, because the mean of its divisors is an integer number (78091832356278).

Almost surely, 2^{312213302140331} is an apocalyptic number.

312213302140331 is a deficient number, since it is larger than the sum of its proper divisors (154027284781).

312213302140331 is a wasteful number, since it uses less digits than its factorization.

312213302140331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154027284780.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 312213302140331 its reverse (133041203312213), we get a palindrome (445254505452544).

The spelling of 312213302140331 in words is "three hundred twelve trillion, two hundred thirteen billion, three hundred two million, one hundred forty thousand, three hundred thirty-one".