80121312 has 60 divisors (see below), whose sum is σ = 235642176. Its totient is φ = 26706240.

The previous prime is 80121281. The next prime is 80121337. The reversal of 80121312 is 21312108.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12864 + ... + 18047.

Almost surely, 2^80121312 is an apocalyptic number.

It is an amenable number.

80121312 is an abundant number, since it is smaller than the sum of its proper divisors (155520864).

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

80121312 is a wasteful number, since it uses less digits than its factorization.

80121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30933 (or 30916 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 80121312 is about 8951.0508880243. The cubic root of 80121312 is about 431.1046269932.

The spelling of 80121312 in words is "eighty million, one hundred twenty-one thousand, three hundred twelve".