1051320103 has 16 divisors (see below), whose sum is σ = 1174612320. Its totient is φ = 935110656.

The previous prime is 1051320091. The next prime is 1051320107. The reversal of 1051320103 is 3010231501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051320103 is a prime.

It is a super-4 number, since 4×1051320103⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051320107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136101 + ... + 143617.

It is an arithmetic number, because the mean of its divisors is an integer number (73413270).

Almost surely, 2^1051320103 is an apocalyptic number.

1051320103 is a deficient number, since it is larger than the sum of its proper divisors (123292217).

1051320103 is a wasteful number, since it uses less digits than its factorization.

1051320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1051320103 is about 32424.0667251966. The cubic root of 1051320103 is about 1016.8221301393.

Adding to 1051320103 its reverse (3010231501), we get a palindrome (4061551604).

The spelling of 1051320103 in words is "one billion, fifty-one million, three hundred twenty thousand, one hundred three".