240201881 has 4 divisors (see below), whose sum is σ = 240358500. Its totient is φ = 240045264.

The previous prime is 240201851. The next prime is 240201889. The reversal of 240201881 is 188102042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97614400 + 142587481 = 9880^2 + 11941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240201881 is a prime.

It is a super-2 number, since 2×240201881² = 115393887271876322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240201881.

It is not an unprimeable number, because it can be changed into a prime (240201889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75986 + ... + 79083.

It is an arithmetic number, because the mean of its divisors is an integer number (60089625).

Almost surely, 2^240201881 is an apocalyptic number.

It is an amenable number.

240201881 is a deficient number, since it is larger than the sum of its proper divisors (156619).

240201881 is a wasteful number, since it uses less digits than its factorization.

240201881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156618.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 240201881 is about 15498.4476964630. The cubic root of 240201881 is about 621.6206999134.

The spelling of 240201881 in words is "two hundred forty million, two hundred one thousand, eight hundred eighty-one".