312111403050 has 384 divisors, whose sum is σ = 856745164800. Its totient is φ = 74924593920.

The previous prime is 312111403013. The next prime is 312111403057. The reversal of 312111403050 is 50304111213.

It is not an unprimeable number, because it can be changed into a prime (312111403057) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 744895741 + ... + 744896159.

It is an arithmetic number, because the mean of its divisors is an integer number (2231107200).

Almost surely, 2^312111403050 is an apocalyptic number.

312111403050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 312111403050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428372582400).

312111403050 is an abundant number, since it is smaller than the sum of its proper divisors (544633761750).

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

312111403050 is a wasteful number, since it uses less digits than its factorization.

312111403050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 312111403050 its reverse (50304111213), we get a palindrome (362415514263).

The spelling of 312111403050 in words is "three hundred twelve billion, one hundred eleven million, four hundred three thousand, fifty".