312212322430386 has 64 divisors (see below), whose sum is σ = 714602529788160. Its totient is φ = 89081791303680.

The previous prime is 312212322430223. The next prime is 312212322430387. The reversal of 312212322430386 is 683034223212213.

It is a super-2 number, since 2×312212322430386² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (312212322430387) 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, 112069866 + ... + 114821946.

It is an arithmetic number, because the mean of its divisors is an integer number (11165664527940).

Almost surely, 2^{312212322430386} is an apocalyptic number.

312212322430386 is an abundant number, since it is smaller than the sum of its proper divisors (402390207357774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312212322430386 is a wasteful number, since it uses less digits than its factorization.

312212322430386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755779.

The product of its (nonzero) digits is 497664, while the sum is 42.

Adding to 312212322430386 its reverse (683034223212213), we get a palindrome (995246545642599).

The spelling of 312212322430386 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred twenty-two million, four hundred thirty thousand, three hundred eighty-six".