312561403241 has 16 divisors (see below), whose sum is σ = 332543712768. Its totient is φ = 293256028800.

The previous prime is 312561403213. The next prime is 312561403243. The reversal of 312561403241 is 142304165213.

It is a cyclic number.

It is not a de Polignac number, because 312561403241 - 2⁶ = 312561403177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312561403198 and 312561403207.

It is not an unprimeable number, because it can be changed into a prime (312561403243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162575 + ... + 807188.

It is an arithmetic number, because the mean of its divisors is an integer number (20783982048).

Almost surely, 2^312561403241 is an apocalyptic number.

312561403241 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

312561403241 is a deficient number, since it is larger than the sum of its proper divisors (19982309527).

312561403241 is a wasteful number, since it uses less digits than its factorization.

312561403241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970112.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 312561403241 its reverse (142304165213), we get a palindrome (454865568454).

The spelling of 312561403241 in words is "three hundred twelve billion, five hundred sixty-one million, four hundred three thousand, two hundred forty-one".