312920080 has 40 divisors (see below), whose sum is σ = 793681344. Its totient is φ = 113788800.

The previous prime is 312920039. The next prime is 312920081. The reversal of 312920080 is 80029213.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (312920081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176916 + ... + 178675.

Almost surely, 2^312920080 is an apocalyptic number.

It is an amenable number.

312920080 is an abundant number, since it is smaller than the sum of its proper divisors (480761264).

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

312920080 is a wasteful number, since it uses less digits than its factorization.

312920080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355615 (or 355609 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 312920080 is about 17689.5471960138. The cubic root of 312920080 is about 678.9083406805.

Adding to 312920080 its reverse (80029213), we get a palindrome (392949293).

The spelling of 312920080 in words is "three hundred twelve million, nine hundred twenty thousand, eighty".