312101380 has 24 divisors (see below), whose sum is σ = 662173848. Its totient is φ = 123552768.

The previous prime is 312101371. The next prime is 312101381. The reversal of 312101380 is 83101213.

It can be written as a sum of positive squares in 4 ways, for example, as 50438404 + 261662976 = 7102^2 + 16176^2 .

It is not an unprimeable number, because it can be changed into a prime (312101381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78499 + ... + 82378.

It is an arithmetic number, because the mean of its divisors is an integer number (27590577).

Almost surely, 2^312101380 is an apocalyptic number.

It is an amenable number.

312101380 is an abundant number, since it is smaller than the sum of its proper divisors (350072468).

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

312101380 is a wasteful number, since it uses less digits than its factorization.

312101380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160983 (or 160981 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 312101380 is about 17666.3912557149. The cubic root of 312101380 is about 678.3157424031.

Adding to 312101380 its reverse (83101213), we get a palindrome (395202593).

It can be divided in two parts, 312101 and 380, that added together give a square (312481 = 559²).

The spelling of 312101380 in words is "three hundred twelve million, one hundred one thousand, three hundred eighty".