213931402 has 8 divisors (see below), whose sum is σ = 325686816. Its totient is φ = 105369132.

The previous prime is 213931387. The next prime is 213931409. The reversal of 213931402 is 204139312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (213931409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798118 + ... + 798385.

It is an arithmetic number, because the mean of its divisors is an integer number (40710852).

Almost surely, 2^213931402 is an apocalyptic number.

213931402 is a deficient number, since it is larger than the sum of its proper divisors (111755414).

213931402 is a wasteful number, since it uses less digits than its factorization.

213931402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596572.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 213931402 is about 14626.3940190329. The cubic root of 213931402 is about 598.0784843466.

The spelling of 213931402 in words is "two hundred thirteen million, nine hundred thirty-one thousand, four hundred two".