312452952140 has 144 divisors (see below), whose sum is σ = 818410158720. Its totient is φ = 99548467200.

The previous prime is 312452952131. The next prime is 312452952143. The reversal of 312452952140 is 41259254213.

It is a super-2 number, since 2×312452952140² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312452952094 and 312452952103.

It is not an unprimeable number, because it can be changed into a prime (312452952143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1197440 + ... + 1434840.

It is an arithmetic number, because the mean of its divisors is an integer number (5683403880).

Almost surely, 2^312452952140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312452952140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409205079360).

312452952140 is an abundant number, since it is smaller than the sum of its proper divisors (505957206580).

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

312452952140 is a wasteful number, since it uses less digits than its factorization.

312452952140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237520 (or 237511 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 312452952140 in words is "three hundred twelve billion, four hundred fifty-two million, nine hundred fifty-two thousand, one hundred forty".