312310200120 has 64 divisors (see below), whose sum is σ = 937071573120. Its totient is φ = 83270189184.

The previous prime is 312310200113. The next prime is 312310200127. The reversal of 312310200120 is 21002013213.

It is an interprime number because it is at equal distance from previous prime (312310200113) and next prime (312310200127).

It is a super-2 number, since 2×312310200120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 312310200120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312310200127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619147 + ... + 1003973.

It is an arithmetic number, because the mean of its divisors is an integer number (14641743330).

Almost surely, 2^312310200120 is an apocalyptic number.

312310200120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312310200120 is an abundant number, since it is smaller than the sum of its proper divisors (624761373000).

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

312310200120 is a wasteful number, since it uses less digits than its factorization.

312310200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391604 (or 391600 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 312310200120 its reverse (21002013213), we get a palindrome (333312213333).

The spelling of 312310200120 in words is "three hundred twelve billion, three hundred ten million, two hundred thousand, one hundred twenty".