212303402 has 4 divisors (see below), whose sum is σ = 318455106. Its totient is φ = 106151700.

The previous prime is 212303401. The next prime is 212303431. The reversal of 212303402 is 204303212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 202749121 + 9554281 = 14239^2 + 3091^2 .

It is not an unprimeable number, because it can be changed into a prime (212303401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53075849 + ... + 53075852.

Almost surely, 2^212303402 is an apocalyptic number.

212303402 is a deficient number, since it is larger than the sum of its proper divisors (106151704).

212303402 is a wasteful number, since it uses less digits than its factorization.

212303402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106151703.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212303402 is about 14570.6349209635. The cubic root of 212303402 is about 596.5575106264.

Adding to 212303402 its reverse (204303212), we get a palindrome (416606614).

The spelling of 212303402 in words is "two hundred twelve million, three hundred three thousand, four hundred two".