312212343332431 has 4 divisors (see below), whose sum is σ = 312219079497000. Its totient is φ = 312205607167864.

The previous prime is 312212343332339. The next prime is 312212343332437. The reversal of 312212343332431 is 134233343212213.

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 312212343332431 - 2¹³ = 312212343324239 is a prime.

It is a super-2 number, since 2×312212343332431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212343332437) 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, 3368012761 + ... + 3368105458.

It is an arithmetic number, because the mean of its divisors is an integer number (78054769874250).

Almost surely, 2^{312212343332431} is an apocalyptic number.

312212343332431 is a deficient number, since it is larger than the sum of its proper divisors (6736164569).

312212343332431 is an equidigital number, since it uses as much as digits as its factorization.

312212343332431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736164568.

The product of its digits is 186624, while the sum is 37.

Adding to 312212343332431 its reverse (134233343212213), we get a palindrome (446445686544644).

The spelling of 312212343332431 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred forty-three million, three hundred thirty-two thousand, four hundred thirty-one".