312440420425 has 12 divisors (see below), whose sum is σ = 442772710336. Its totient is φ = 214244859600.

The previous prime is 312440420423. The next prime is 312440420431. The reversal of 312440420425 is 524024044213.

It is not a de Polignac number, because 312440420425 - 2¹ = 312440420423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312440420423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 892686741 + ... + 892687090.

Almost surely, 2^312440420425 is an apocalyptic number.

312440420425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312440420425 is a deficient number, since it is larger than the sum of its proper divisors (130332289911).

312440420425 is a wasteful number, since it uses less digits than its factorization.

312440420425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785373848 (or 1785373843 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 312440420425 its reverse (524024044213), we get a palindrome (836464464638).

The spelling of 312440420425 in words is "three hundred twelve billion, four hundred forty million, four hundred twenty thousand, four hundred twenty-five".