11431133031 has 8 divisors (see below), whose sum is σ = 15242372464. Its totient is φ = 7620324480.

The previous prime is 11431133023. The next prime is 11431133041. The reversal of 11431133031 is 13033113411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11431133031 - 2³ = 11431133023 is a prime.

It is a super-2 number, since 2×11431133031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11431132989 and 11431133007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431133041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39676 + ... + 156321.

It is an arithmetic number, because the mean of its divisors is an integer number (1905296558).

Almost surely, 2^11431133031 is an apocalyptic number.

11431133031 is a deficient number, since it is larger than the sum of its proper divisors (3811239433).

11431133031 is a wasteful number, since it uses less digits than its factorization.

11431133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215441.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11431133031 its reverse (13033113411), we get a palindrome (24464246442).

The spelling of 11431133031 in words is "eleven billion, four hundred thirty-one million, one hundred thirty-three thousand, thirty-one".