11243151031 has 4 divisors (see below), whose sum is σ = 12849315472. Its totient is φ = 9636986592.

The previous prime is 11243150987. The next prime is 11243151037. The reversal of 11243151031 is 13015134211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13015134211 = 227 ⋅57335393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11243151031 is a prime.

It is a super-2 number, since 2×11243151031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11243150993 and 11243151011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243151037) 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, 803082210 + ... + 803082223.

It is an arithmetic number, because the mean of its divisors is an integer number (3212328868).

Almost surely, 2^11243151031 is an apocalyptic number.

11243151031 is a deficient number, since it is larger than the sum of its proper divisors (1606164441).

11243151031 is an equidigital number, since it uses as much as digits as its factorization.

11243151031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606164440.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 11243151031 its reverse (13015134211), we get a palindrome (24258285242).

The spelling of 11243151031 in words is "eleven billion, two hundred forty-three million, one hundred fifty-one thousand, thirty-one".