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1201203213 = 37487111743
BaseRepresentation
bin100011110011000…
…1110100000001101
310002201021110000220
41013212032200031
54430002000323
6315105541553
741524026120
oct10746164015
93081243026
101201203213
11567058831
122963448b9
13161b26042
14b57643b7
15706c70e3
hex4798e80d

1201203213 has 16 divisors (see below), whose sum is σ = 1830936576. Its totient is φ = 686202480.

The previous prime is 1201203209. The next prime is 1201203233. The reversal of 1201203213 is 3123021021.

It is not a de Polignac number, because 1201203213 - 22 = 1201203209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201203192 and 1201203201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201203233) 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, 96420 + ... + 108162.

It is an arithmetic number, because the mean of its divisors is an integer number (114433536).

Almost surely, 21201203213 is an apocalyptic number.

It is an amenable number.

1201203213 is a deficient number, since it is larger than the sum of its proper divisors (629733363).

1201203213 is a wasteful number, since it uses less digits than its factorization.

1201203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16624.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201203213 is about 34658.3786839488. The cubic root of 1201203213 is about 1063.0136184882.

Adding to 1201203213 its reverse (3123021021), we get a palindrome (4324224234).

The spelling of 1201203213 in words is "one billion, two hundred one million, two hundred three thousand, two hundred thirteen".

Divisors: 1 3 7 21 4871 11743 14613 34097 35229 82201 102291 246603 57200153 171600459 400401071 1201203213