2312315478 has 64 divisors (see below), whose sum is σ = 5624087040. Its totient is φ = 698392800.

The previous prime is 2312315477. The next prime is 2312315491. The reversal of 2312315478 is 8745132132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312315477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178476 + ... + 190992.

It is an arithmetic number, because the mean of its divisors is an integer number (87876360).

Almost surely, 2^2312315478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2312315478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812043520).

2312315478 is an abundant number, since it is smaller than the sum of its proper divisors (3311771562).

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

2312315478 is a wasteful number, since it uses less digits than its factorization.

2312315478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850 (or 12844 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 2312315478 is about 48086.5415475058. The cubic root of 2312315478 is about 1322.3579445356.

The spelling of 2312315478 in words is "two billion, three hundred twelve million, three hundred fifteen thousand, four hundred seventy-eight".