817214134 has 16 divisors (see below), whose sum is σ = 1342863360. Its totient is φ = 369904360.

The previous prime is 817214131. The next prime is 817214141. The reversal of 817214134 is 431412718.

It is a junction number, because it is equal to n+sod(n) for n = 817214096 and 817214105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817214131) 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, 72454 + ... + 82969.

It is an arithmetic number, because the mean of its divisors is an integer number (83928960).

Almost surely, 2^817214134 is an apocalyptic number.

817214134 is a deficient number, since it is larger than the sum of its proper divisors (525649226).

817214134 is a wasteful number, since it uses less digits than its factorization.

817214134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155675.

The product of its digits is 5376, while the sum is 31.

The square root of 817214134 is about 28586.9574106794. The cubic root of 817214134 is about 934.9289827575.

The spelling of 817214134 in words is "eight hundred seventeen million, two hundred fourteen thousand, one hundred thirty-four".