201312434 has 4 divisors (see below), whose sum is σ = 301968654. Its totient is φ = 100656216.

The previous prime is 201312431. The next prime is 201312437. The reversal of 201312434 is 434213102.

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

It is an interprime number because it is at equal distance from previous prime (201312431) and next prime (201312437).

It can be written as a sum of positive squares in only one way, i.e., 119355625 + 81956809 = 10925^2 + 9053^2 .

It is not an unprimeable number, because it can be changed into a prime (201312431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50328107 + ... + 50328110.

Almost surely, 2^201312434 is an apocalyptic number.

201312434 is a deficient number, since it is larger than the sum of its proper divisors (100656220).

201312434 is a wasteful number, since it uses less digits than its factorization.

201312434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100656219.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 201312434 is about 14188.4612978293. The cubic root of 201312434 is about 586.0799531362.

Adding to 201312434 its reverse (434213102), we get a palindrome (635525536).

The spelling of 201312434 in words is "two hundred one million, three hundred twelve thousand, four hundred thirty-four".