312203100000000 has 1296 divisors, whose sum is σ = 1146875037799680. Its totient is φ = 74764800000000.

The previous prime is 312203099999899. The next prime is 312203100000013. The reversal of 312203100000000 is 1302213.

It is a happy number.

It is a super-2 number, since 2×312203100000000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 293699999469 + ... + 293700000531.

Almost surely, 2^{312203100000000} is an apocalyptic number.

312203100000000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312203100000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573437518899840).

312203100000000 is an abundant number, since it is smaller than the sum of its proper divisors (834671937799680).

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

312203100000000 is an frugal number, since it uses more digits than its factorization.

312203100000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 312203100000000 its reverse (1302213), we get a palindrome (312203101302213).

The spelling of 312203100000000 in words is "three hundred twelve trillion, two hundred three billion, one hundred million", and thus it is an aban number.