1030211993 has 2 divisors, whose sum is σ = 1030211994. Its totient is φ = 1030211992.

The previous prime is 1030211969. The next prime is 1030212023. The reversal of 1030211993 is 3991120301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997801744 + 32410249 = 31588^2 + 5693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030211993 - 2¹⁰ = 1030210969 is a prime.

It is a super-2 number, since 2×1030211993² = 2122673501042064098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1030211953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515105996 + 515105997.

It is an arithmetic number, because the mean of its divisors is an integer number (515105997).

Almost surely, 2^1030211993 is an apocalyptic number.

It is an amenable number.

1030211993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030211993 is an equidigital number, since it uses as much as digits as its factorization.

1030211993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1030211993 is about 32096.9156306334. The cubic root of 1030211993 is about 1009.9709147589.

The spelling of 1030211993 in words is "one billion, thirty million, two hundred eleven thousand, nine hundred ninety-three".