312421025 has 24 divisors (see below), whose sum is σ = 453554304. Its totient is φ = 209001600.

The previous prime is 312421003. The next prime is 312421027. The reversal of 312421025 is 520124213.

It is not a de Polignac number, because 312421025 - 2⁸ = 312420769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312420988 and 312421006.

It is not an unprimeable number, because it can be changed into a prime (312421027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14597 + ... + 28946.

It is an arithmetic number, because the mean of its divisors is an integer number (18898096).

Almost surely, 2^312421025 is an apocalyptic number.

312421025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312421025 is a deficient number, since it is larger than the sum of its proper divisors (141133279).

312421025 is a wasteful number, since it uses less digits than its factorization.

312421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43601 (or 43596 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 312421025 is about 17675.4356381957. The cubic root of 312421025 is about 678.5472336974.

Adding to 312421025 its reverse (520124213), we get a palindrome (832545238).

The spelling of 312421025 in words is "three hundred twelve million, four hundred twenty-one thousand, twenty-five".