217113402 has 16 divisors (see below), whose sum is σ = 473702112. Its totient is φ = 65791920.

The previous prime is 217113383. The next prime is 217113427. The reversal of 217113402 is 204311712.

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, 1644733 + ... + 1644864.

It is an arithmetic number, because the mean of its divisors is an integer number (29606382).

Almost surely, 2^217113402 is an apocalyptic number.

217113402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

217113402 is an abundant number, since it is smaller than the sum of its proper divisors (256588710).

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

217113402 is a wasteful number, since it uses less digits than its factorization.

217113402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289613.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 217113402 is about 14734.7684745978. The cubic root of 217113402 is about 601.0291614795.

The spelling of 217113402 in words is "two hundred seventeen million, one hundred thirteen thousand, four hundred two".