1031020213 has 2 divisors, whose sum is σ = 1031020214. Its totient is φ = 1031020212.

The previous prime is 1031020189. The next prime is 1031020217. The reversal of 1031020213 is 3120201301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651627729 + 379392484 = 25527^2 + 19478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031020213 is a prime.

It is a super-2 number, since 2×1031020213² = 2126005359229130738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031020193 and 1031020202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031020217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515510106 + 515510107.

It is an arithmetic number, because the mean of its divisors is an integer number (515510107).

Almost surely, 2^1031020213 is an apocalyptic number.

It is an amenable number.

1031020213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031020213 is an equidigital number, since it uses as much as digits as its factorization.

1031020213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1031020213 is about 32109.5034685994. The cubic root of 1031020213 is about 1010.2349592240.

Adding to 1031020213 its reverse (3120201301), we get a palindrome (4151221514).

The spelling of 1031020213 in words is "one billion, thirty-one million, twenty thousand, two hundred thirteen".