1031238505 has 16 divisors (see below), whose sum is σ = 1353024000. Its totient is φ = 748303360.

The previous prime is 1031238493. The next prime is 1031238553. The reversal of 1031238505 is 5058321301.

It is not a de Polignac number, because 1031238505 - 2¹³ = 1031230313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3816 + ... + 45574.

It is an arithmetic number, because the mean of its divisors is an integer number (84564000).

Almost surely, 2^1031238505 is an apocalyptic number.

It is an amenable number.

1031238505 is a deficient number, since it is larger than the sum of its proper divisors (321785495).

1031238505 is a wasteful number, since it uses less digits than its factorization.

1031238505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42224.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1031238505 is about 32112.9024692568. The cubic root of 1031238505 is about 1010.3062512786.

Adding to 1031238505 its reverse (5058321301), we get a palindrome (6089559806).

It can be divided in two parts, 103123 and 8505, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 1031238505 in words is "one billion, thirty-one million, two hundred thirty-eight thousand, five hundred five".