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1031013 = 32971181
BaseRepresentation
bin11111011101101100101
31221101021200
43323231211
5230443023
634033113
711522604
oct3735545
91841250
101031013
11644685
12418799
132a1389
141cba3b
15155743
hexfbb65

1031013 has 12 divisors (see below), whose sum is σ = 1505868. Its totient is φ = 679680.

The previous prime is 1031003. The next prime is 1031047. The reversal of 1031013 is 3101301.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 294849 = 858^2 + 543^2 .

It is not a de Polignac number, because 1031013 - 26 = 1030949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1030986 and 1031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (125489).

21031013 is an apocalyptic number.

It is an amenable number.

1031013 is a deficient number, since it is larger than the sum of its proper divisors (474855).

1031013 is a wasteful number, since it uses less digits than its factorization.

1031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 1031013 is about 1015.3881031409. The cubic root of 1031013 is about 101.0232603356.

Adding to 1031013 its reverse (3101301), we get a palindrome (4132314).

The spelling of 1031013 in words is "one million, thirty-one thousand, thirteen".

Divisors: 1 3 9 97 291 873 1181 3543 10629 114557 343671 1031013