1030763021 has 4 divisors (see below), whose sum is σ = 1030842012. Its totient is φ = 1030684032.

The previous prime is 1030763003. The next prime is 1030763033. The reversal of 1030763021 is 1203670301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1203670301 = 29501 ⋅40801.

It can be written as a sum of positive squares in 2 ways, for example, as 162282121 + 868480900 = 12739^2 + 29470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030763021 - 2²⁶ = 963654157 is a prime.

It is a super-2 number, since 2×1030763021² = 2124944810922092882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030763081) 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, 14756 + ... + 47741.

It is an arithmetic number, because the mean of its divisors is an integer number (257710503).

Almost surely, 2^1030763021 is an apocalyptic number.

It is an amenable number.

1030763021 is a deficient number, since it is larger than the sum of its proper divisors (78991).

1030763021 is an equidigital number, since it uses as much as digits as its factorization.

1030763021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78990.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1030763021 is about 32105.4982985781. The cubic root of 1030763021 is about 1010.1509498923.

The spelling of 1030763021 in words is "one billion, thirty million, seven hundred sixty-three thousand, twenty-one".