1023261015 has 32 divisors (see below), whose sum is σ = 1872737280. Its totient is φ = 467368704.

The previous prime is 1023260993. The next prime is 1023261023. The reversal of 1023261015 is 5101623201.

It is not a de Polignac number, because 1023261015 - 2⁶ = 1023260951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1023260982 and 1023261000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139971 + ... + 147099.

It is an arithmetic number, because the mean of its divisors is an integer number (58523040).

Almost surely, 2^1023261015 is an apocalyptic number.

1023261015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1023261015 is a deficient number, since it is larger than the sum of its proper divisors (849476265).

1023261015 is a wasteful number, since it uses less digits than its factorization.

1023261015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8511.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1023261015 is about 31988.4512754213. The cubic root of 1023261015 is about 1007.6943173069.

Adding to 1023261015 its reverse (5101623201), we get a palindrome (6124884216).

The spelling of 1023261015 in words is "one billion, twenty-three million, two hundred sixty-one thousand, fifteen".