11278102131 has 18 divisors (see below), whose sum is σ = 16374517692. Its totient is φ = 7480030320.

The previous prime is 11278102079. The next prime is 11278102153. The reversal of 11278102131 is 13120187211.

It is not a de Polignac number, because 11278102131 - 2⁶ = 11278102067 is a prime.

It is a super-2 number, since 2×11278102131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11278102095 and 11278102104.

It is not an unprimeable number, because it can be changed into a prime (11278102531) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4626645 + ... + 4629081.

Almost surely, 2^11278102131 is an apocalyptic number.

11278102131 is a deficient number, since it is larger than the sum of its proper divisors (5096415561).

11278102131 is an frugal number, since it uses more digits than its factorization.

11278102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

Adding to 11278102131 its reverse (13120187211), we get a palindrome (24398289342).

The spelling of 11278102131 in words is "eleven billion, two hundred seventy-eight million, one hundred two thousand, one hundred thirty-one".