Search a number
-
+
1030233221 = 1279805499
BaseRepresentation
bin111101011010000…
…001110010000101
32122210120021021222
4331122001302011
54102214430341
6250121250125
734346560253
oct7532016205
92583507258
101030233221
114895a3516
12249033945
13135594374
149ab7b5d3
15606a444b
hex3d681c85

1030233221 has 4 divisors (see below), whose sum is σ = 1031040000. Its totient is φ = 1029426444.

The previous prime is 1030233203. The next prime is 1030233223. The reversal of 1030233221 is 1223320301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1030233221 - 26 = 1030233157 is a prime.

It is a super-2 number, since 2×10302332212 = 2122760979304069682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1030233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030233223) 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, 401471 + ... + 404028.

It is an arithmetic number, because the mean of its divisors is an integer number (257760000).

Almost surely, 21030233221 is an apocalyptic number.

It is an amenable number.

1030233221 is a deficient number, since it is larger than the sum of its proper divisors (806779).

1030233221 is an equidigital number, since it uses as much as digits as its factorization.

1030233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806778.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1030233221 is about 32097.2463149099. The cubic root of 1030233221 is about 1009.9778516857.

Adding to 1030233221 its reverse (1223320301), we get a palindrome (2253553522).

The spelling of 1030233221 in words is "one billion, thirty million, two hundred thirty-three thousand, two hundred twenty-one".

Divisors: 1 1279 805499 1030233221