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1031000215 = 5729457149
BaseRepresentation
bin111101011100111…
…101000010010111
32122212000020102011
4331130331002113
54102414001330
6250145525051
734356233350
oct7534750227
92585006364
101031000215
11489a777a3
12249343787
131357a24cb
149acdad27
15607a682a
hex3d73d097

1031000215 has 8 divisors (see below), whose sum is σ = 1413943200. Its totient is φ = 706971552.

The previous prime is 1031000203. The next prime is 1031000219. The reversal of 1031000215 is 5120001301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1031000215 - 213 = 1030992023 is a prime.

It is a super-2 number, since 2×10310002152 = 2125922886660092450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031000195 and 1031000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031000219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14728540 + ... + 14728609.

It is an arithmetic number, because the mean of its divisors is an integer number (176742900).

Almost surely, 21031000215 is an apocalyptic number.

1031000215 is a deficient number, since it is larger than the sum of its proper divisors (382942985).

1031000215 is an equidigital number, since it uses as much as digits as its factorization.

1031000215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29457161.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1031000215 is about 32109.1920639558. The cubic root of 1031000215 is about 1010.2284275676.

Adding to 1031000215 its reverse (5120001301), we get a palindrome (6151001516).

The spelling of 1031000215 in words is "one billion, thirty-one million, two hundred fifteen", and thus it is an aban number.

Divisors: 1 5 7 35 29457149 147285745 206200043 1031000215