11401272631 has 16 divisors (see below), whose sum is σ = 13258990080. Its totient is φ = 9600999840.

The previous prime is 11401272607. The next prime is 11401272637. The reversal of 11401272631 is 13627210411.

It is a cyclic number.

It is not a de Polignac number, because 11401272631 - 2⁷ = 11401272503 is a prime.

It is a super-2 number, since 2×11401272631² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11401272631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401272637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748665 + ... + 763741.

It is an arithmetic number, because the mean of its divisors is an integer number (828686880).

Almost surely, 2^11401272631 is an apocalyptic number.

11401272631 is a deficient number, since it is larger than the sum of its proper divisors (1857717449).

11401272631 is a wasteful number, since it uses less digits than its factorization.

11401272631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16974.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 11401272631 in words is "eleven billion, four hundred one million, two hundred seventy-two thousand, six hundred thirty-one".