1145023403 has 2 divisors, whose sum is σ = 1145023404. Its totient is φ = 1145023402.

The previous prime is 1145023381. The next prime is 1145023433. The reversal of 1145023403 is 3043205411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145023403 - 2¹⁰ = 1145022379 is a prime.

It is a super-2 number, since 2×1145023403² = 2622157186835400818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145023433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572511701 + 572511702.

It is an arithmetic number, because the mean of its divisors is an integer number (572511702).

Almost surely, 2^1145023403 is an apocalyptic number.

1145023403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145023403 is an equidigital number, since it uses as much as digits as its factorization.

1145023403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1145023403 is about 33838.1944406022. The cubic root of 1145023403 is about 1046.1760842235.

Adding to 1145023403 its reverse (3043205411), we get a palindrome (4188228814).

The spelling of 1145023403 in words is "one billion, one hundred forty-five million, twenty-three thousand, four hundred three".