201351234 has 32 divisors (see below), whose sum is σ = 476104320. Its totient is φ = 55544832.

The previous prime is 201351233. The next prime is 201351239. The reversal of 201351234 is 432153102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 201351234.

It is not an unprimeable number, because it can be changed into a prime (201351233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81439 + ... + 83874.

It is an arithmetic number, because the mean of its divisors is an integer number (14878260).

Almost surely, 2^201351234 is an apocalyptic number.

201351234 is an abundant number, since it is smaller than the sum of its proper divisors (274753086).

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

201351234 is a wasteful number, since it uses less digits than its factorization.

201351234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165354.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 201351234 is about 14189.8285401903. The cubic root of 201351234 is about 586.1176034706.

The spelling of 201351234 in words is "two hundred one million, three hundred fifty-one thousand, two hundred thirty-four".