11400135231 has 16 divisors (see below), whose sum is σ = 15617263104. Its totient is φ = 7391713824.

The previous prime is 11400135221. The next prime is 11400135251. The reversal of 11400135231 is 13253100411.

It is not a de Polignac number, because 11400135231 - 2⁶ = 11400135167 is a prime.

It is a super-2 number, since 2×11400135231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11400135198 and 11400135207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400135221) 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, 276310 + ... + 314876.

It is an arithmetic number, because the mean of its divisors is an integer number (976078944).

Almost surely, 2^11400135231 is an apocalyptic number.

11400135231 is a deficient number, since it is larger than the sum of its proper divisors (4217127873).

11400135231 is a wasteful number, since it uses less digits than its factorization.

11400135231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41270.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 11400135231 its reverse (13253100411), we get a palindrome (24653235642).

The spelling of 11400135231 in words is "eleven billion, four hundred million, one hundred thirty-five thousand, two hundred thirty-one".