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1022012013 = 311109284129
BaseRepresentation
bin111100111010101…
…010101001101101
32122020002120220210
4330322222221231
54043113341023
6245225133033
734216646601
oct7472525155
92566076823
101022012013
11484998830
1224632a179
13133976349
1499a3b501
155eacd593
hex3ceaaa6d

1022012013 has 16 divisors (see below), whose sum is σ = 1500206400. Its totient is φ = 613716480.

The previous prime is 1022011973. The next prime is 1022012021. The reversal of 1022012013 is 3102102201.

It is not a de Polignac number, because 1022012013 - 210 = 1022010989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022012213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138468 + ... + 145661.

It is an arithmetic number, because the mean of its divisors is an integer number (93762900).

Almost surely, 21022012013 is an apocalyptic number.

It is an amenable number.

1022012013 is a deficient number, since it is larger than the sum of its proper divisors (478194387).

1022012013 is a wasteful number, since it uses less digits than its factorization.

1022012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284252.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1022012013 is about 31968.9226124372. The cubic root of 1022012013 is about 1007.2841499960.

Adding to 1022012013 its reverse (3102102201), we get a palindrome (4124114214).

The spelling of 1022012013 in words is "one billion, twenty-two million, twelve thousand, thirteen".

Divisors: 1 3 11 33 109 327 1199 3597 284129 852387 3125419 9376257 30970061 92910183 340670671 1022012013