1023243531 has 4 divisors (see below), whose sum is σ = 1364324712. Its totient is φ = 682162352.

The previous prime is 1023243467. The next prime is 1023243539. The reversal of 1023243531 is 1353423201.

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

It is a cyclic number.

It is not a de Polignac number, because 1023243531 - 2⁶ = 1023243467 is a prime.

It is a super-2 number, since 2×1023243531² = 2094054647466695922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1023243539) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 170540586 + ... + 170540591.

It is an arithmetic number, because the mean of its divisors is an integer number (341081178).

Almost surely, 2^1023243531 is an apocalyptic number.

1023243531 is a deficient number, since it is larger than the sum of its proper divisors (341081181).

1023243531 is an equidigital number, since it uses as much as digits as its factorization.

1023243531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341081180.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1023243531 is about 31988.1779881256. The cubic root of 1023243531 is about 1007.6885779346.

Adding to 1023243531 its reverse (1353423201), we get a palindrome (2376666732).

The spelling of 1023243531 in words is "one billion, twenty-three million, two hundred forty-three thousand, five hundred thirty-one".