11231531450 has 24 divisors (see below), whose sum is σ = 20996710812. Its totient is φ = 4469803520.

The previous prime is 11231531447. The next prime is 11231531461. The reversal of 11231531450 is 5413513211.

It can be written as a sum of positive squares in 6 ways, for example, as 5353702561 + 5877828889 = 73169^2 + 76667^2 .

It is a super-2 number, since 2×11231531450² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 560279 + ... + 579978.

Almost surely, 2^11231531450 is an apocalyptic number.

11231531450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11231531450 is a deficient number, since it is larger than the sum of its proper divisors (9765179362).

11231531450 is a wasteful number, since it uses less digits than its factorization.

11231531450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140466 (or 1140461 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 11231531450 in words is "eleven billion, two hundred thirty-one million, five hundred thirty-one thousand, four hundred fifty".