312315101 has 4 divisors (see below), whose sum is σ = 356931552. Its totient is φ = 267698652.

The previous prime is 312315079. The next prime is 312315119. The reversal of 312315101 is 101513213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101513213 = 463 ⋅219251.

It is a cyclic number.

It is not a de Polignac number, because 312315101 - 2⁶ = 312315037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312315101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312315191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22308215 + ... + 22308228.

It is an arithmetic number, because the mean of its divisors is an integer number (89232888).

Almost surely, 2^312315101 is an apocalyptic number.

It is an amenable number.

312315101 is a deficient number, since it is larger than the sum of its proper divisors (44616451).

312315101 is an equidigital number, since it uses as much as digits as its factorization.

312315101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44616450.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 312315101 is about 17672.4390223874. The cubic root of 312315101 is about 678.4705395830.

Adding to 312315101 its reverse (101513213), we get a palindrome (413828314).

It can be divided in two parts, 31 and 2315101, that added together give a palindrome (2315132).

The spelling of 312315101 in words is "three hundred twelve million, three hundred fifteen thousand, one hundred one".