240491636131 has 16 divisors (see below), whose sum is σ = 249900235200. Its totient is φ = 231159132288.

The previous prime is 240491636129. The next prime is 240491636141. The reversal of 240491636131 is 131636194042.

It is a cyclic number.

It is not a de Polignac number, because 240491636131 - 2¹ = 240491636129 is a prime.

It is a super-2 number, since 2×240491636131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240491636111) 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, 8201965 + ... + 8231233.

It is an arithmetic number, because the mean of its divisors is an integer number (15618764700).

Almost surely, 2^240491636131 is an apocalyptic number.

240491636131 is a deficient number, since it is larger than the sum of its proper divisors (9408599069).

240491636131 is a wasteful number, since it uses less digits than its factorization.

240491636131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30558.

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 240491636131 in words is "two hundred forty billion, four hundred ninety-one million, six hundred thirty-six thousand, one hundred thirty-one".