13402312 has 32 divisors (see below), whose sum is σ = 31331520. Its totient is φ = 5221440.

The previous prime is 13402309. The next prime is 13402327. The reversal of 13402312 is 21320431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10263 + ... + 11494.

It is an arithmetic number, because the mean of its divisors is an integer number (979110).

Almost surely, 2^13402312 is an apocalyptic number.

It is an amenable number.

13402312 is an abundant number, since it is smaller than the sum of its proper divisors (17929208).

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

13402312 is a wasteful number, since it uses less digits than its factorization.

13402312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21781 (or 21777 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13402312 is about 3660.9168250590. The cubic root of 13402312 is about 237.5344334193.

Adding to 13402312 its reverse (21320431), we get a palindrome (34722743).

The spelling of 13402312 in words is "thirteen million, four hundred two thousand, three hundred twelve".