11051431331 has 8 divisors (see below), whose sum is σ = 11446330800. Its totient is φ = 10657452960.

The previous prime is 11051431319. The next prime is 11051431351. The reversal of 11051431331 is 13313415011.

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

It is a cyclic number.

It is not a de Polignac number, because 11051431331 - 2¹⁸ = 11051169187 is a prime.

It is a super-2 number, since 2×11051431331² (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 = 11051431297 and 11051431306.

It is not an unprimeable number, because it can be changed into a prime (11051431351) 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 7 ways as a sum of consecutive naturals, for example, 205805 + ... + 253886.

It is an arithmetic number, because the mean of its divisors is an integer number (1430791350).

Almost surely, 2^11051431331 is an apocalyptic number.

11051431331 is a deficient number, since it is larger than the sum of its proper divisors (394899469).

11051431331 is an equidigital number, since it uses as much as digits as its factorization.

11051431331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460549.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 11051431331 its reverse (13313415011), we get a palindrome (24364846342).

The spelling of 11051431331 in words is "eleven billion, fifty-one million, four hundred thirty-one thousand, three hundred thirty-one".