213474 has 16 divisors (see below), whose sum is σ = 436608. Its totient is φ = 69552.

The previous prime is 213467. The next prime is 213481. The reversal of 213474 is 474312.

It is an interprime number because it is at equal distance from previous prime (213467) and next prime (213481).

It is a super-2 number, since 2×213474² = 91142297352, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 213474.

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, 97 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (27288).

2²¹³⁴⁷⁴ is an apocalyptic number.

213474 is an abundant number, since it is smaller than the sum of its proper divisors (223134).

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

213474 is a wasteful number, since it uses less digits than its factorization.

213474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its digits is 672, while the sum is 21.

The square root of 213474 is about 462.0324663917. The cubic root of 213474 is about 59.7651934075.

Adding to 213474 its reverse (474312), we get a palindrome (687786).

The spelling of 213474 in words is "two hundred thirteen thousand, four hundred seventy-four".