140135115231 has 128 divisors (see below), whose sum is σ = 225485568000. Its totient is φ = 86882336640.

The previous prime is 140135115209. The next prime is 140135115247. The reversal of 140135115231 is 132511531041.

140135115231 is a `hidden beast` number, since 1 + 4 + 0 + 135 + 1 + 1 + 523 + 1 = 666.

It is not a de Polignac number, because 140135115231 - 2⁶ = 140135115167 is a prime.

It is a super-2 number, since 2×140135115231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 140135115195 and 140135115204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140135115251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 334451140 + ... + 334451558.

It is an arithmetic number, because the mean of its divisors is an integer number (1761606000).

Almost surely, 2^140135115231 is an apocalyptic number.

140135115231 is a deficient number, since it is larger than the sum of its proper divisors (85350452769).

140135115231 is an equidigital number, since it uses as much as digits as its factorization.

140135115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 140135115231 its reverse (132511531041), we get a palindrome (272646646272).

The spelling of 140135115231 in words is "one hundred forty billion, one hundred thirty-five million, one hundred fifteen thousand, two hundred thirty-one".