201431334 has 32 divisors (see below), whose sum is σ = 459375840. Its totient is φ = 58332672.

The previous prime is 201431327. The next prime is 201431341. The reversal of 201431334 is 433134102.

It is an interprime number because it is at equal distance from previous prime (201431327) and next prime (201431341).

It is a self number, because there is not a number n which added to its sum of digits gives 201431334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74629 + ... + 77280.

It is an arithmetic number, because the mean of its divisors is an integer number (14355495).

Almost surely, 2^201431334 is an apocalyptic number.

201431334 is an abundant number, since it is smaller than the sum of its proper divisors (257944506).

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

201431334 is a wasteful number, since it uses less digits than its factorization.

201431334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151944.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 201431334 is about 14192.6507037974. The cubic root of 201431334 is about 586.1953147664.

Adding to 201431334 its reverse (433134102), we get a palindrome (634565436).

The spelling of 201431334 in words is "two hundred one million, four hundred thirty-one thousand, three hundred thirty-four".