1040310263 has 4 divisors (see below), whose sum is σ = 1085541168. Its totient is φ = 995079360.

The previous prime is 1040310259. The next prime is 1040310319. The reversal of 1040310263 is 3620130401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3620130401 = 19 ⋅190533179.

It is not a de Polignac number, because 1040310263 - 2² = 1040310259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040310203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22615418 + ... + 22615463.

It is an arithmetic number, because the mean of its divisors is an integer number (271385292).

Almost surely, 2^1040310263 is an apocalyptic number.

1040310263 is a deficient number, since it is larger than the sum of its proper divisors (45230905).

1040310263 is an equidigital number, since it uses as much as digits as its factorization.

1040310263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45230904.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1040310263 is about 32253.8410580817. The cubic root of 1040310263 is about 1013.2601456861.

Adding to 1040310263 its reverse (3620130401), we get a palindrome (4660440664).

The spelling of 1040310263 in words is "one billion, forty million, three hundred ten thousand, two hundred sixty-three".