1011203523 has 48 divisors (see below), whose sum is σ = 1686896640. Its totient is φ = 577886400.

The previous prime is 1011203521. The next prime is 1011203603. The reversal of 1011203523 is 3253021101.

It is not a de Polignac number, because 1011203523 - 2¹ = 1011203521 is a prime.

It is a super-2 number, since 2×1011203523² = 2045065129855223058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011203496 and 1011203505.

It is not an unprimeable number, because it can be changed into a prime (1011203521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119358 + ... + 127548.

It is an arithmetic number, because the mean of its divisors is an integer number (35143680).

Almost surely, 2^1011203523 is an apocalyptic number.

1011203523 is a deficient number, since it is larger than the sum of its proper divisors (675693117).

1011203523 is a wasteful number, since it uses less digits than its factorization.

1011203523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280 (or 8277 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1011203523 is about 31799.4264570920. The cubic root of 1011203523 is about 1003.7206472819.

Adding to 1011203523 its reverse (3253021101), we get a palindrome (4264224624).

The spelling of 1011203523 in words is "one billion, eleven million, two hundred three thousand, five hundred twenty-three".