312404145525220 has 96 divisors (see below), whose sum is σ = 793979272396800. Its totient is φ = 100796045137920.

The previous prime is 312404145525211. The next prime is 312404145525239. The reversal of 312404145525220 is 22525541404213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9272605 + ... + 26660635.

It is an arithmetic number, because the mean of its divisors is an integer number (8270617420800).

Almost surely, 2^{312404145525220} is an apocalyptic number.

It is an amenable number.

312404145525220 is an abundant number, since it is smaller than the sum of its proper divisors (481575126871580).

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

312404145525220 is a wasteful number, since it uses less digits than its factorization.

312404145525220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395613 (or 17395611 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 312404145525220 its reverse (22525541404213), we get a palindrome (334929686929433).

The spelling of 312404145525220 in words is "three hundred twelve trillion, four hundred four billion, one hundred forty-five million, five hundred twenty-five thousand, two hundred twenty".