11431430131 has 4 divisors (see below), whose sum is σ = 12470651064. Its totient is φ = 10392209200.

The previous prime is 11431430119. The next prime is 11431430183. The reversal of 11431430131 is 13103413411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13103413411 = 11 ⋅1191219401.

It is a cyclic number.

It is not a de Polignac number, because 11431430131 - 2⁹ = 11431429619 is a prime.

It is a super-2 number, since 2×11431430131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11431430111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519610450 + ... + 519610471.

It is an arithmetic number, because the mean of its divisors is an integer number (3117662766).

Almost surely, 2^11431430131 is an apocalyptic number.

11431430131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11431430131 is a deficient number, since it is larger than the sum of its proper divisors (1039220933).

11431430131 is a wasteful number, since it uses less digits than its factorization.

11431430131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039220932.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11431430131 its reverse (13103413411), we get a palindrome (24534843542).

The spelling of 11431430131 in words is "eleven billion, four hundred thirty-one million, four hundred thirty thousand, one hundred thirty-one".