201540312 has 96 divisors (see below), whose sum is σ = 579458880. Its totient is φ = 65590560.

The previous prime is 201540307. The next prime is 201540373. The reversal of 201540312 is 213045102.

It is a super-2 number, since 2×201540312² = 81236994722114688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82387 + ... + 84797.

It is an arithmetic number, because the mean of its divisors is an integer number (6036030).

Almost surely, 2^201540312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201540312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289729440).

201540312 is an abundant number, since it is smaller than the sum of its proper divisors (377918568).

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

201540312 is a wasteful number, since it uses less digits than its factorization.

201540312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201540312 is about 14196.4894252065. The cubic root of 201540312 is about 586.3010098019.

Adding to 201540312 its reverse (213045102), we get a palindrome (414585414).

The spelling of 201540312 in words is "two hundred one million, five hundred forty thousand, three hundred twelve".