1013523231 has 8 divisors (see below), whose sum is σ = 1544416384. Its totient is φ = 579156120.

The previous prime is 1013523211. The next prime is 1013523257. The reversal of 1013523231 is 1323253101.

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

It is not a de Polignac number, because 1013523231 - 2¹⁸ = 1013261087 is a prime.

It is a super-2 number, since 2×1013523231² = 2054458679553358722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 48263011 = 1013523231 / (1 + 0 + 1 + 3 + 5 + 2 + 3 + 2 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1013523198 and 1013523207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013523211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24131485 + ... + 24131526.

It is an arithmetic number, because the mean of its divisors is an integer number (193052048).

Almost surely, 2^1013523231 is an apocalyptic number.

1013523231 is a deficient number, since it is larger than the sum of its proper divisors (530893153).

1013523231 is an equidigital number, since it uses as much as digits as its factorization.

1013523231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48263021.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1013523231 is about 31835.8796171866. The cubic root of 1013523231 is about 1004.4875752113.

Adding to 1013523231 its reverse (1323253101), we get a palindrome (2336776332).

The spelling of 1013523231 in words is "one billion, thirteen million, five hundred twenty-three thousand, two hundred thirty-one".