11141302531 has 4 divisors (see below), whose sum is σ = 11141515000. Its totient is φ = 11141090064.

The previous prime is 11141302489. The next prime is 11141302573. The reversal of 11141302531 is 13520314111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11141302489) and next prime (11141302573).

It is a cyclic number.

It is not a de Polignac number, because 11141302531 - 2¹¹ = 11141300483 is a prime.

It is a super-2 number, since 2×11141302531² (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 (11141302031) 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, 35095 + ... + 153343.

It is an arithmetic number, because the mean of its divisors is an integer number (2785378750).

Almost surely, 2^11141302531 is an apocalyptic number.

11141302531 is a deficient number, since it is larger than the sum of its proper divisors (212469).

11141302531 is an equidigital number, since it uses as much as digits as its factorization.

11141302531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212468.

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

Adding to 11141302531 its reverse (13520314111), we get a palindrome (24661616642).

The spelling of 11141302531 in words is "eleven billion, one hundred forty-one million, three hundred two thousand, five hundred thirty-one".